diff --git a/.github/workflows/create_stable_release.yml b/.github/workflows/create_stable_release.yml
index 53c6e45e..30a74fdd 100644
--- a/.github/workflows/create_stable_release.yml
+++ b/.github/workflows/create_stable_release.yml
@@ -51,7 +51,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          tag_name: v1.5.1
+          tag_name: ${{ steps.version.outputs.version }}
           release_name: Mayhem firmware ${{ steps.version.outputs.version }}
           body: |
             **Stable release - ${{ steps.version.outputs.version }}**
diff --git a/.github/workflows/past_version.txt b/.github/workflows/past_version.txt
index 76864c1c..53b5bbb1 100644
--- a/.github/workflows/past_version.txt
+++ b/.github/workflows/past_version.txt
@@ -1 +1 @@
-v1.5.0
\ No newline at end of file
+v1.5.1
diff --git a/.github/workflows/version.txt b/.github/workflows/version.txt
index c9b3c015..f1a2e631 100644
--- a/.github/workflows/version.txt
+++ b/.github/workflows/version.txt
@@ -1 +1 @@
-v1.5.1
\ No newline at end of file
+v1.5.3
diff --git a/firmware/application/CMakeLists.txt b/firmware/application/CMakeLists.txt
index 02764e07..80fc9c56 100644
--- a/firmware/application/CMakeLists.txt
+++ b/firmware/application/CMakeLists.txt
@@ -154,6 +154,7 @@ set(CPPSRC
 	${COMMON}/ui_widget.cpp
 	${COMMON}/utility.cpp
 	${COMMON}/wm8731.cpp
+	app_settings.cpp
 	audio.cpp
 	baseband_api.cpp
 	capture_thread.cpp
diff --git a/firmware/application/app_settings.cpp b/firmware/application/app_settings.cpp
new file mode 100644
index 00000000..df93a20b
--- /dev/null
+++ b/firmware/application/app_settings.cpp
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ * Copyright (C) 2022 Arjan Onwezen
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "app_settings.hpp"
+
+#include "file.hpp"
+#include "portapack.hpp"
+#include "portapack_persistent_memory.hpp"
+#include <cstring>
+#include <algorithm>
+
+namespace std {
+
+int app_settings::load(std::string application, AppSettings* settings) {
+
+	if (portapack::persistent_memory::load_app_settings()) {
+		file_path = folder+"/"+application+".ini";
+
+		auto error = settings_file.open(file_path);
+		if (!error.is_valid()) {
+			auto error = settings_file.read(file_content, std::min((int)settings_file.size(), MAX_FILE_CONTENT_SIZE));
+
+			settings->baseband_bandwidth=std::app_settings::read_long_long(file_content, "baseband_bandwidth=");
+			settings->channel_bandwidth=std::app_settings::read_long_long(file_content, "channel_bandwidth=");
+			settings->lna=std::app_settings::read_long_long(file_content, "lna=");
+			settings->modulation=std::app_settings::read_long_long(file_content, "modulation=");
+			settings->rx_amp=std::app_settings::read_long_long(file_content, "rx_amp=");
+			settings->rx_frequency=std::app_settings::read_long_long(file_content, "rx_frequency=");
+			settings->sampling_rate=std::app_settings::read_long_long(file_content, "sampling_rate=");
+			settings->vga=std::app_settings::read_long_long(file_content, "vga=");
+			settings->tx_amp=std::app_settings::read_long_long(file_content, "tx_amp=");
+			settings->tx_frequency=std::app_settings::read_long_long(file_content, "tx_frequency=");
+			settings->tx_gain=std::app_settings::read_long_long(file_content, "tx_gain=");
+			rc = SETTINGS_OK;
+		}
+		else rc = SETTINGS_UNABLE_TO_LOAD;
+	}
+	else rc = SETTINGS_DISABLED;
+	return(rc);
+}
+
+int app_settings::save(std::string application, AppSettings* settings) {
+
+	if (portapack::persistent_memory::save_app_settings()) {        
+		file_path = folder+"/"+application+".ini";
+		make_new_directory(folder);
+
+		auto error = settings_file.create(file_path);
+		if (!error.is_valid()) {
+			// Save common setting
+			settings_file.write_line("baseband_bandwidth="+to_string_dec_uint(portapack::receiver_model.baseband_bandwidth()));
+			settings_file.write_line("channel_bandwidth="+to_string_dec_uint(portapack::transmitter_model.channel_bandwidth()));
+			settings_file.write_line("lna="+to_string_dec_uint(portapack::receiver_model.lna()));
+			settings_file.write_line("rx_amp="+to_string_dec_uint(portapack::receiver_model.rf_amp()));
+			settings_file.write_line("sampling_rate="+to_string_dec_uint(portapack::receiver_model.sampling_rate()));
+			settings_file.write_line("tx_amp="+to_string_dec_uint(portapack::transmitter_model.rf_amp()));
+			settings_file.write_line("tx_gain="+to_string_dec_uint(portapack::transmitter_model.tx_gain()));
+			settings_file.write_line("vga="+to_string_dec_uint(portapack::receiver_model.vga()));
+			// Save other settings from struct
+			settings_file.write_line("rx_frequency="+to_string_dec_uint(settings->rx_frequency));
+			settings_file.write_line("tx_frequency="+to_string_dec_uint(settings->tx_frequency));
+
+			rc = SETTINGS_OK;
+		}
+		else rc = SETTINGS_UNABLE_TO_SAVE;
+	}
+	else rc = SETTINGS_DISABLED;
+	return(rc);
+}
+
+
+long long int app_settings::read_long_long(char* file_content, const char* setting_text) {
+	auto position = strstr(file_content, (char *)setting_text);
+	if (position) {
+		position += strlen((char *)setting_text);
+		setting_value = strtoll(position, nullptr, 10);
+	}
+	return(setting_value);
+}
+
+
+} /* namespace std */
diff --git a/firmware/application/app_settings.hpp b/firmware/application/app_settings.hpp
new file mode 100644
index 00000000..9a877978
--- /dev/null
+++ b/firmware/application/app_settings.hpp
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ * Copyright (C) 2022 Arjan Onwezen
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __APP_SETTINGS_H__
+#define __APP_SETTINGS_H__
+
+
+#include <cstddef>
+#include <cstdint>
+#include <string>
+
+#include "file.hpp"
+#include "string_format.hpp"
+
+
+namespace std {
+class app_settings {
+
+
+
+public:
+
+#define SETTINGS_OK	 	 	0		// settings found
+#define SETTINGS_UNABLE_TO_LOAD		-1		// settings (file) not found
+#define SETTINGS_UNABLE_TO_SAVE		-2		// unable to save settings
+#define SETTINGS_DISABLED		-3		// load/save settings disabled in settings
+
+
+
+	struct AppSettings {
+		uint32_t 	baseband_bandwidth;
+		uint32_t 	channel_bandwidth;
+		uint8_t 	lna;
+		uint8_t		modulation;
+		uint8_t 	rx_amp;
+		uint32_t 	rx_frequency;
+		uint32_t 	sampling_rate;
+		uint8_t 	tx_amp;
+		uint32_t 	tx_frequency;
+		uint8_t 	tx_gain;
+		uint8_t 	vga;
+	};
+
+	int load(std::string application, AppSettings* settings);
+	int save(std::string application, AppSettings* settings);
+
+
+private:
+
+#define MAX_FILE_CONTENT_SIZE 1000
+
+	char 		file_content[MAX_FILE_CONTENT_SIZE] = {};	
+	std::string 	file_path = "";
+	std::string 	folder = "SETTINGS";
+	int		rc = SETTINGS_OK;
+	File 		settings_file { };
+	long long int	setting_value {} ;	
+
+	long long int read_long_long(char* file_content, const char* setting_text);
+
+
+}; // class app_settings
+} // namespace std
+
+
+
+#endif/*__APP_SETTINGS_H__*/
diff --git a/firmware/application/apps/ais_app.cpp b/firmware/application/apps/ais_app.cpp
index a5c25a55..1561fee2 100644
--- a/firmware/application/apps/ais_app.cpp
+++ b/firmware/application/apps/ais_app.cpp
@@ -335,24 +335,23 @@ AISAppView::AISAppView(NavigationView& nav) : nav_ { nav } {
 		&recent_entry_detail_view,
 	});
 
+
+	// load app settings
+	auto rc = settings.load("rx_ais", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		field_rf_amp.set_value(app_settings.rx_amp);
+		target_frequency_ = app_settings.rx_frequency;
+	}
+	else target_frequency_ = initial_target_frequency;
+
 	recent_entry_detail_view.hidden(true);
 
-	target_frequency_ = initial_target_frequency;
-  
-    receiver_model.set_tuning_frequency(tuning_frequency());
-    receiver_model.set_sampling_rate(sampling_rate);
-    receiver_model.set_baseband_bandwidth(baseband_bandwidth);
-    receiver_model.enable();  // Before using radio::enable(), but not updating Ant.DC-Bias.
-
-/*  radio::enable({     //  this can be removed, previous version,no DC-bias control.
-		tuning_frequency(),
-		sampling_rate,
-		baseband_bandwidth,
-		rf::Direction::Receive,
-		receiver_model.rf_amp(),
-		static_cast<int8_t>(receiver_model.lna()),
-		static_cast<int8_t>(receiver_model.vga()),
-	}); */
+    	receiver_model.set_tuning_frequency(tuning_frequency());
+    	receiver_model.set_sampling_rate(sampling_rate);
+    	receiver_model.set_baseband_bandwidth(baseband_bandwidth);
+    	receiver_model.enable();  // Before using radio::enable(), but not updating Ant.DC-Bias.
 	
 	options_channel.on_change = [this](size_t, OptionsField::value_t v) {
 		this->on_frequency_changed(v);
@@ -373,7 +372,11 @@ AISAppView::AISAppView(NavigationView& nav) : nav_ { nav } {
 }
 
 AISAppView::~AISAppView() {
-/*	radio::disable();  */
+
+	// save app settings
+	app_settings.rx_frequency = target_frequency_;
+	settings.save("rx_ais", &app_settings);
+
 	receiver_model.disable();   // to switch off all, including DC bias.
 
 	baseband::shutdown();
diff --git a/firmware/application/apps/ais_app.hpp b/firmware/application/apps/ais_app.hpp
index c6a8a7d5..6d319ba0 100644
--- a/firmware/application/apps/ais_app.hpp
+++ b/firmware/application/apps/ais_app.hpp
@@ -33,7 +33,7 @@
 #include "event_m0.hpp"
 
 #include "log_file.hpp"
-
+#include "app_settings.hpp"
 #include "ais_packet.hpp"
 
 #include "lpc43xx_cpp.hpp"
@@ -173,6 +173,11 @@ private:
 	static constexpr uint32_t sampling_rate = 2457600;
 	static constexpr uint32_t baseband_bandwidth = 1750000;
 
+
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	NavigationView& nav_;
 
 	AISRecentEntries recent { };
diff --git a/firmware/application/apps/analog_audio_app.cpp b/firmware/application/apps/analog_audio_app.cpp
index 6c4dec74..422633da 100644
--- a/firmware/application/apps/analog_audio_app.cpp
+++ b/firmware/application/apps/analog_audio_app.cpp
@@ -129,10 +129,19 @@ AnalogAudioView::AnalogAudioView(
 		&waterfall
 	});
 
+	// load app settings
+	auto rc = settings.load("rx_audio", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		receiver_model.set_rf_amp(app_settings.rx_amp);
+		field_frequency.set_value(app_settings.rx_frequency);
+	}
+	else field_frequency.set_value(receiver_model.tuning_frequency());
+	
 	//Filename Datetime and Frequency
 	record_view.set_filename_date_frequency(true);
 
-	field_frequency.set_value(receiver_model.tuning_frequency());
 	field_frequency.set_step(receiver_model.frequency_step());
 	field_frequency.on_change = [this](rf::Frequency f) {
 		this->on_tuning_frequency_changed(f);
@@ -160,6 +169,7 @@ AnalogAudioView::AnalogAudioView(
 
 	const auto modulation = receiver_model.modulation();
 	options_modulation.set_by_value(toUType(modulation));
+
 	options_modulation.on_change = [this](size_t, OptionsField::value_t v) {
 		this->on_modulation_changed(static_cast<ReceiverModel::Mode>(v));
 	};
@@ -183,7 +193,7 @@ AnalogAudioView::AnalogAudioView(
 	audio::output::start();
 
 	update_modulation(static_cast<ReceiverModel::Mode>(modulation));
-    on_modulation_changed(static_cast<ReceiverModel::Mode>(modulation));
+    	on_modulation_changed(static_cast<ReceiverModel::Mode>(modulation));
 }
 
 size_t AnalogAudioView::get_spec_bw_index() {
@@ -210,6 +220,11 @@ void AnalogAudioView::set_spec_trigger(uint16_t trigger) {
 }
 
 AnalogAudioView::~AnalogAudioView() {
+
+	// save app settings
+	app_settings.rx_frequency = field_frequency.value();
+	settings.save("rx_audio", &app_settings);
+
 	// TODO: Manipulating audio codec here, and in ui_receiver.cpp. Good to do
 	// both?
 	audio::output::stop();
@@ -397,9 +412,6 @@ void AnalogAudioView::update_modulation(const ReceiverModel::Mode modulation) {
 	}
 }
 
-/*void AnalogAudioView::squelched() {
-	if (exit_on_squelch) nav_.pop();
-}*/
 
 void AnalogAudioView::handle_coded_squelch(const uint32_t value) {
 	float diff, min_diff = value;
diff --git a/firmware/application/apps/analog_audio_app.hpp b/firmware/application/apps/analog_audio_app.hpp
index 04795e47..fd6f5bc1 100644
--- a/firmware/application/apps/analog_audio_app.hpp
+++ b/firmware/application/apps/analog_audio_app.hpp
@@ -29,7 +29,7 @@
 #include "ui_spectrum.hpp"
 #include "ui_record_view.hpp"
 #include "ui_font_fixed_8x16.hpp"
-
+#include "app_settings.hpp"
 #include "tone_key.hpp"
 
 
@@ -154,6 +154,10 @@ public:
 private:
 	static constexpr ui::Dim header_height = 3 * 16;
 
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	const Rect options_view_rect { 0 * 8, 1 * 16, 30 * 8, 1 * 16 };
 	const Rect nbfm_view_rect { 0 * 8, 1 * 16, 18 * 8, 1 * 16 };
 
diff --git a/firmware/application/apps/analog_tv_app.cpp b/firmware/application/apps/analog_tv_app.cpp
index b3710573..50a1cb20 100644
--- a/firmware/application/apps/analog_tv_app.cpp
+++ b/firmware/application/apps/analog_tv_app.cpp
@@ -57,7 +57,18 @@ AnalogTvView::AnalogTvView(
 		&tv
 	});
 
-	field_frequency.set_value(receiver_model.tuning_frequency());
+
+	// load app settings
+	auto rc = settings.load("rx_tv", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		receiver_model.set_rf_amp(app_settings.rx_amp);
+		field_frequency.set_value(app_settings.rx_frequency);
+	}
+	else field_frequency.set_value(receiver_model.tuning_frequency());
+
+
 	field_frequency.set_step(receiver_model.frequency_step());
 	field_frequency.on_change = [this](rf::Frequency f) {
 		this->on_tuning_frequency_changed(f);
@@ -106,12 +117,15 @@ AnalogTvView::AnalogTvView(
 }
 
 AnalogTvView::~AnalogTvView() {
+
+	// save app settings
+	app_settings.rx_frequency = field_frequency.value();
+	settings.save("rx_tv", &app_settings);
+
 	// TODO: Manipulating audio codec here, and in ui_receiver.cpp. Good to do
 	// both?
 	audio::output::stop();
-
 	receiver_model.disable();
-
 	baseband::shutdown();
 }
 
diff --git a/firmware/application/apps/analog_tv_app.hpp b/firmware/application/apps/analog_tv_app.hpp
index 81ac8ea5..def1c940 100644
--- a/firmware/application/apps/analog_tv_app.hpp
+++ b/firmware/application/apps/analog_tv_app.hpp
@@ -29,7 +29,7 @@
 #include "ui_receiver.hpp"
 #include "ui_tv.hpp"
 #include "ui_record_view.hpp"
-
+#include "app_settings.hpp"
 #include "ui_font_fixed_8x16.hpp"
 
 #include "tone_key.hpp"
@@ -58,6 +58,10 @@ public:
 private:
 	static constexpr ui::Dim header_height = 3 * 16;
 
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	const Rect options_view_rect { 0 * 8, 1 * 16, 30 * 8, 1 * 16 };
 	const Rect nbfm_view_rect { 0 * 8, 1 * 16, 18 * 8, 1 * 16 };
 
diff --git a/firmware/application/apps/ert_app.cpp b/firmware/application/apps/ert_app.cpp
index 91b3e5e1..5ab68fa9 100644
--- a/firmware/application/apps/ert_app.cpp
+++ b/firmware/application/apps/ert_app.cpp
@@ -105,6 +105,15 @@ ERTAppView::ERTAppView(NavigationView&) {
 		&recent_entries_view,
 	});
 
+	// load app settings
+	auto rc = settings.load("rx_ert", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		field_rf_amp.set_value(app_settings.rx_amp);
+	}
+
+
 	radio::enable({
 		initial_target_frequency,
 		sampling_rate,
@@ -122,6 +131,10 @@ ERTAppView::ERTAppView(NavigationView&) {
 }
 
 ERTAppView::~ERTAppView() {
+
+	// save app settings
+	settings.save("rx_ert", &app_settings);
+
 	radio::disable();
 
 	baseband::shutdown();
diff --git a/firmware/application/apps/ert_app.hpp b/firmware/application/apps/ert_app.hpp
index 19cf70d0..ea4e11c6 100644
--- a/firmware/application/apps/ert_app.hpp
+++ b/firmware/application/apps/ert_app.hpp
@@ -28,7 +28,7 @@
 #include "ui_channel.hpp"
 
 #include "event_m0.hpp"
-
+#include "app_settings.hpp"
 #include "log_file.hpp"
 
 #include "ert_packet.hpp"
@@ -131,6 +131,11 @@ private:
 	ERTRecentEntries recent { };
 	std::unique_ptr<ERTLogger> logger { };
 
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
+
 	const RecentEntriesColumns columns { {
 		{ "ID", 10 },
 		{ "Tp", 2 },
diff --git a/firmware/application/apps/lge_app.cpp b/firmware/application/apps/lge_app.cpp
index c1f4ea0f..ad3b6d0a 100644
--- a/firmware/application/apps/lge_app.cpp
+++ b/firmware/application/apps/lge_app.cpp
@@ -39,10 +39,14 @@ using namespace portapack;
 namespace ui {
 
 void LGEView::focus() {
-	options_trame.focus();
+	options_frame.focus();
 }
 
 LGEView::~LGEView() {
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_lge", &app_settings);
+
 	transmitter_model.disable();
 	baseband::shutdown();
 }
@@ -70,10 +74,10 @@ void LGEView::generate_frame_touche() {
 	std::vector<uint8_t> data { 0x46, 0x28, 0x01, 0x45, 0x27, 0x01, 0x44, 0x23 };
 	
 	console.write("\n\x1B\x07Touche:\x1B\x10");
-	generate_lge_frame(0x96, (field_joueur.value() << 8) | field_salle.value(), 0x0001, data);
+	generate_lge_frame(0x96, (field_player.value() << 8) | field_room.value(), 0x0001, data);
 }
 
-void LGEView::generate_frame_pseudo() {
+void LGEView::generate_frame_nickname() {
 	// 0040.48s:
 	// 30 02 1A 00 19 00 FF 00 02 19 42 52 45 42 49 53 20 00 00 00 00 00 00 00 00 00
 	// 04 01 B0 04 7F 1F 11 33 40 1F 22 01 07 00 00 01 07 00 00 63 05 00 00 99 A2 
@@ -90,15 +94,15 @@ void LGEView::generate_frame_pseudo() {
 	};
 	uint32_t c;
 	
-	//data_header[2] = field_salle.value();	// ?
-	//data_footer[0] = field_salle.value();	// ?
+	//data_header[2] = field_room.value();	// ?
+	//data_footer[0] = field_room.value();	// ?
 	
 	data.insert(data.begin(), data_header.begin(), data_header.end());
 	
-	data.push_back(field_joueur.value());
+	data.push_back(field_player.value());
 	
 	c = 0;
-	for (auto &ch : pseudo) {
+	for (auto &ch : nickname) {
 		data.push_back(ch);
 		c++;
 	}
@@ -108,16 +112,16 @@ void LGEView::generate_frame_pseudo() {
 	while (++c < 16)
 		data.push_back(0x00);
 	
-	data.push_back(field_equipe.value());
+	data.push_back(field_team.value());
 	
 	data.insert(data.end(), data_footer.begin(), data_footer.end());
 	
-	console.write("\n\x1B\x0ESet pseudo:\x1B\x10");
+	console.write("\n\x1B\x0ESet nickname:\x1B\x10");
 	
-	generate_lge_frame(0x02, 0x001A, field_joueur.value(), data);
+	generate_lge_frame(0x02, 0x001A, field_player.value(), data);
 }
 
-void LGEView::generate_frame_equipe() {
+void LGEView::generate_frame_team() {
 	// 0041.83s:
 	// 3D 03 FF FF FF FF 02 03 01 52 4F 55 47 45 00 00 00 00 00 00 00 00 00 00 00 00
 	// 02 56 45 52 54 45 00 00 00 00 00 00 00 00 00 00 00 01 03 42 4C 45 55 45 00 00
@@ -129,10 +133,10 @@ void LGEView::generate_frame_equipe() {
 
 	data.insert(data.begin(), data_header.begin(), data_header.end());
 	
-	data.push_back(field_equipe.value());
+	data.push_back(field_team.value());
 	
 	c = 0;
-	for (auto &ch : pseudo) {
+	for (auto &ch : nickname) {
 		data.push_back(ch);
 		c++;
 	}
@@ -140,14 +144,14 @@ void LGEView::generate_frame_equipe() {
 	while (c++ < 16)
 		data.push_back(0x00);
 	
-	data.push_back(field_equipe.value() - 1);	// Color ?
+	data.push_back(field_team.value() - 1);	// Color ?
 	
-	console.write("\n\x1B\x0ASet equipe:\x1B\x10");
+	console.write("\n\x1B\x0ASet team:\x1B\x10");
 	
 	generate_lge_frame(0x03, data);
 }
 
-void LGEView::generate_frame_broadcast_pseudo() {
+void LGEView::generate_frame_broadcast_nickname() {
 	// 0043.86s:
 	// 3D 04 FF FF FF FF 02 03 19 42 52 45 42 49 53 20 00 00 00 00 00 00 00 00 00 04
 	// 07 50 4F 4E 45 59 20 00 00 00 00 00 00 00 00 00 00 05 1B 41 42 42 59 20 00 00
@@ -159,10 +163,10 @@ void LGEView::generate_frame_broadcast_pseudo() {
 
 	data.insert(data.begin(), data_header.begin(), data_header.end());
 	
-	data.push_back(field_joueur.value());
+	data.push_back(field_player.value());
 	
 	c = 0;
-	for (auto &ch : pseudo) {
+	for (auto &ch : nickname) {
 		data.push_back(ch);
 		c++;
 	}
@@ -172,9 +176,9 @@ void LGEView::generate_frame_broadcast_pseudo() {
 	while (++c < 16)
 		data.push_back(0x00);
 	
-	data.push_back(field_equipe.value());
+	data.push_back(field_team.value());
 	
-	console.write("\n\x1B\x09" "Broadcast pseudo:\x1B\x10");
+	console.write("\n\x1B\x09" "Broadcast nickname:\x1B\x10");
 	
 	generate_lge_frame(0x04, data);
 }
@@ -184,14 +188,14 @@ void LGEView::generate_frame_start() {
 	// 0A 05 FF FF FF FF 02 EC FF FF FF A3 35
 	std::vector<uint8_t> data { 0x02, 0xEC, 0xFF, 0xFF, 0xFF };
 	
-	//data[0] = field_salle.value();	// ?
+	//data[0] = field_room.value();	// ?
 	
 	console.write("\n\x1B\x0DStart:\x1B\x10");
 	generate_lge_frame(0x05, data);
 }
 
 void LGEView::generate_frame_gameover() {
-	std::vector<uint8_t> data { (uint8_t)field_salle.value() };
+	std::vector<uint8_t> data { (uint8_t)field_room.value() };
 	
 	console.write("\n\x1B\x0CGameover:\x1B\x10");
 	generate_lge_frame(0x0D, data);
@@ -203,7 +207,7 @@ void LGEView::generate_frame_collier() {
 	// Custom
 	// 0C 00 13 37 13 37 id flags channel playerid zapduty zaptime checksum CRC CRC
 	// channel: field_channel
-	// playerid: field_joueur
+	// playerid: field_player
 	// zapduty: field_power
 	// zaptime: field_duration
 	
@@ -218,8 +222,8 @@ void LGEView::generate_frame_collier() {
 	std::vector<uint8_t> data {
 		id,
 		flags,
-		(uint8_t)field_salle.value(),
-		(uint8_t)field_joueur.value(),
+		(uint8_t)field_room.value(),
+		(uint8_t)field_player.value(),
 		(uint8_t)field_power.value(),
 		(uint8_t)(field_duration.value() * 10)
 	};
@@ -285,11 +289,11 @@ LGEView::LGEView(NavigationView& nav) {
 	
 	add_children({
 		&labels,
-		&options_trame,
-		&field_salle,
-		&button_texte,
-		&field_equipe,
-		&field_joueur,
+		&options_frame,
+		&field_room,
+		&button_text,
+		&field_team,
+		&field_player,
 		&field_id,
 		&field_power,
 		&field_duration,
@@ -300,20 +304,29 @@ LGEView::LGEView(NavigationView& nav) {
 		&tx_view
 	});
 	
-	field_salle.set_value(1);
-	field_equipe.set_value(1);
-	field_joueur.set_value(1);
+	// load app settings
+	auto rc = settings.load("tx_lge", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
+
+	field_room.set_value(1);
+	field_team.set_value(1);
+	field_player.set_value(1);
 	field_id.set_value(1);
 	field_power.set_value(1);
 	field_duration.set_value(2);
 	
-	button_texte.on_select = [this, &nav](Button&) {
+	button_text.on_select = [this, &nav](Button&) {
 		text_prompt(
 			nav,
-			pseudo,
+			nickname,
 			15,
 			[this](std::string& buffer) {
-				button_texte.set_text(buffer);
+				button_text.set_text(buffer);
 			});
 	};
 	
@@ -326,15 +339,15 @@ LGEView::LGEView(NavigationView& nav) {
 	
 	tx_view.on_start = [this]() {
 		if (tx_mode == IDLE) {
-			auto i = options_trame.selected_index_value();
+			auto i = options_frame.selected_index_value();
 			if (i == 0)
 				generate_frame_touche();
 			else if (i == 1)
-				generate_frame_pseudo();
+				generate_frame_nickname();
 			else if (i == 2)
-				generate_frame_equipe();
+				generate_frame_team();
 			else if (i == 3)
-				generate_frame_broadcast_pseudo();
+				generate_frame_broadcast_nickname();
 			else if (i == 4)
 				generate_frame_start();
 			else if (i == 5)
diff --git a/firmware/application/apps/lge_app.hpp b/firmware/application/apps/lge_app.hpp
index 99c5014d..75377b29 100644
--- a/firmware/application/apps/lge_app.hpp
+++ b/firmware/application/apps/lge_app.hpp
@@ -30,6 +30,7 @@
 #include "message.hpp"
 #include "transmitter_model.hpp"
 #include "portapack.hpp"
+#include "app_settings.hpp"
 
 namespace ui {
 
@@ -48,15 +49,19 @@ private:
 		SINGLE,
 		ALL
 	};
+
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
 	
 	tx_modes tx_mode = IDLE;
 	
-    RFM69 rfm69 { 5, 0x2DD4, true, true };
+    	RFM69 rfm69 { 5, 0x2DD4, true, true };
     
 	uint32_t frame_size { 0 };
 	uint32_t repeats { 0 };
 	uint32_t channel_index { 0 };
-	std::string pseudo { "ABCDEF" };
+	std::string nickname { "ABCDEF" };
 	
 	rf::Frequency channels[3] = { 868067000, 868183000, 868295000 };
 
@@ -68,9 +73,9 @@ private:
 	}
 	void generate_lge_frame(const uint8_t command, const uint16_t address_a, const uint16_t address_b, std::vector<uint8_t>& data);
 	void generate_frame_touche();
-	void generate_frame_pseudo();
-	void generate_frame_equipe();
-	void generate_frame_broadcast_pseudo();
+	void generate_frame_nickname();
+	void generate_frame_team();
+	void generate_frame_broadcast_nickname();
 	void generate_frame_start();
 	void generate_frame_gameover();
 	void generate_frame_collier();
@@ -79,28 +84,28 @@ private:
 	
 	Labels labels {
 		//{ { 7 * 8, 1 * 8 }, "NO FUN ALLOWED !", Color::red() },
-		{ { 1 * 8, 1 * 8 }, "Trame:", Color::light_grey() },
-		{ { 1 * 8, 3 * 8 }, "Salle:", Color::light_grey() },
-		{ { 14 * 8, 3 * 8 }, "Texte:", Color::light_grey() },
-		{ { 0 * 8, 5 * 8 }, "Equipe:", Color::light_grey() },
-		{ { 0 * 8, 7 * 8 }, "Joueur:", Color::light_grey() },
-		{ { 0 * 8, 10 * 8 }, "Collier:", Color::light_grey() },
+		{ { 1 * 8, 1 * 8 }, "Frame:", Color::light_grey() },
+		{ { 2 * 8, 3 * 8 }, "Room:", Color::light_grey() },
+		{ { 14 * 8, 3 * 8 }, "Text:", Color::light_grey() },
+		{ { 2 * 8, 5 * 8 }, "Team:", Color::light_grey() },
+		{ { 0 * 8, 7 * 8 }, "Player:", Color::light_grey() },
+		{ { 0 * 8, 10 * 8 }, "Vest:", Color::light_grey() },
 		{ { 4 * 8, 12 * 8 }, "ID:", Color::light_grey() },
 		{ { 3 * 8, 14 * 8 }, "Pow:  /10", Color::light_grey() },
-		{ { 1 * 8, 16 * 8 }, "Duree:  x100ms", Color::light_grey() }
+		{ { 2 * 8, 16 * 8 }, "Time:  x100ms", Color::light_grey() }
 	};
 	
-	OptionsField options_trame {
+	OptionsField options_frame {
 		{ 7 * 8, 1 * 8 },
 		13,
 		{
-			{ "Touche", 0 },
-			{ "Set pseudo", 1 },
-			{ "Set equipe", 2 },
-			{ "Brdcst pseudo", 3 },
+			{ "Key", 0 },
+			{ "Set nickname", 1 },
+			{ "Set team", 2 },
+			{ "Brdcst nick", 3 },
 			{ "Start", 4 },
 			{ "Game over", 5 },
-			{ "Set collier", 6 }
+			{ "Set vest", 6 }
 		}
 	};
 	
@@ -111,7 +116,7 @@ private:
 		true
 	};
 	
-	NumberField field_salle {
+	NumberField field_room {
 		{ 7 * 8, 3 * 8 },
 		1,
 		{ 1, 2 },
@@ -119,12 +124,12 @@ private:
 		'0'
 	};
 	
-	Button button_texte {
+	Button button_text {
 		{ 14 * 8, 5 * 8, 16 * 8, 3 * 8 },
 		"ABCDEF"
 	};
 	
-	NumberField field_equipe {
+	NumberField field_team {
 		{ 7 * 8, 5 * 8 },
 		1,
 		{ 1, 6 },
@@ -132,7 +137,7 @@ private:
 		'0'
 	};
 	
-	NumberField field_joueur {
+	NumberField field_player {
 		{ 7 * 8, 7 * 8 },
 		2,
 		{ 1, 50 },
diff --git a/firmware/application/apps/pocsag_app.cpp b/firmware/application/apps/pocsag_app.cpp
index cb5cacfe..d1dcb6b4 100644
--- a/firmware/application/apps/pocsag_app.cpp
+++ b/firmware/application/apps/pocsag_app.cpp
@@ -77,11 +77,22 @@ POCSAGAppView::POCSAGAppView(NavigationView& nav) {
 		&console
 	});
 	
+	// load app settings
+	auto rc = settings.load("rx_pocsag", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		field_rf_amp.set_value(app_settings.rx_amp);
+		field_frequency.set_value(app_settings.rx_frequency);
+	}
+	else field_frequency.set_value(receiver_model.tuning_frequency());
+
+	receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);
+
 	receiver_model.set_sampling_rate(3072000);
 	receiver_model.set_baseband_bandwidth(1750000);
 	receiver_model.enable();
 	
-	field_frequency.set_value(receiver_model.tuning_frequency());
 	field_frequency.set_step(receiver_model.frequency_step());
 	field_frequency.on_change = [this](rf::Frequency f) {
 		update_freq(f);
@@ -127,6 +138,11 @@ POCSAGAppView::POCSAGAppView(NavigationView& nav) {
 }
 
 POCSAGAppView::~POCSAGAppView() {	
+
+	// save app settings
+	app_settings.rx_frequency = field_frequency.value();
+	settings.save("rx_pocsag", &app_settings);
+
 	audio::output::stop();
 
 	// Save ignored address
diff --git a/firmware/application/apps/pocsag_app.hpp b/firmware/application/apps/pocsag_app.hpp
index b917926c..8ea3c4b9 100644
--- a/firmware/application/apps/pocsag_app.hpp
+++ b/firmware/application/apps/pocsag_app.hpp
@@ -28,7 +28,7 @@
 #include "ui_rssi.hpp"
 
 #include "log_file.hpp"
-
+#include "app_settings.hpp"
 #include "pocsag.hpp"
 #include "pocsag_packet.hpp"
 
@@ -60,6 +60,10 @@ public:
 private:
 	static constexpr uint32_t initial_target_frequency = 466175000;
 
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	bool logging { true };
 	bool ignore { true };
 	uint32_t last_address = 0xFFFFFFFF;
diff --git a/firmware/application/apps/replay_app.cpp b/firmware/application/apps/replay_app.cpp
index 9147c46f..4313b8e7 100644
--- a/firmware/application/apps/replay_app.cpp
+++ b/firmware/application/apps/replay_app.cpp
@@ -201,6 +201,16 @@ ReplayAppView::ReplayAppView(
 	tx_gain = 35;field_rfgain.set_value(tx_gain);  // Initial default  value (-12 dB's max ).
 	field_rfamp.set_value(rf_amp ? 14 : 0);  // Initial default value True. (TX RF amp on , +14dB's)
 
+	field_rfamp.on_change = [this](int32_t v) {	// allow initial value change just after opened file.	
+		rf_amp = (bool)v;
+	};
+	field_rfamp.set_value(rf_amp ? 14 : 0);
+
+    field_rfgain.on_change = [this](int32_t v) { // allow initial value change just after opened file.
+		tx_gain = v;
+	};  
+	field_rfgain.set_value(tx_gain);
+
 	baseband::run_image(portapack::spi_flash::image_tag_replay);
 
 	add_children({
diff --git a/firmware/application/apps/soundboard_app.cpp b/firmware/application/apps/soundboard_app.cpp
index 2c93822f..97e6ad70 100644
--- a/firmware/application/apps/soundboard_app.cpp
+++ b/firmware/application/apps/soundboard_app.cpp
@@ -240,6 +240,15 @@ SoundBoardView::SoundBoardView(
 		&button_next_page,
 		&tx_view
 	});
+
+	// load app settings
+	auto rc = settings.load("tx_soundboard", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
 	
 	refresh_list();
 
@@ -280,6 +289,10 @@ SoundBoardView::SoundBoardView(
 }
 
 SoundBoardView::~SoundBoardView() {
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_soundboard", &app_settings);
+
 	stop();
 	transmitter_model.disable();
 	baseband::shutdown();
diff --git a/firmware/application/apps/soundboard_app.hpp b/firmware/application/apps/soundboard_app.hpp
index ee9e1b12..a8afb73c 100644
--- a/firmware/application/apps/soundboard_app.hpp
+++ b/firmware/application/apps/soundboard_app.hpp
@@ -30,6 +30,7 @@
 #include "lfsr_random.hpp"
 #include "io_wave.hpp"
 #include "tone_key.hpp"
+#include "app_settings.hpp"
 
 namespace ui {
 
@@ -49,6 +50,10 @@ public:
 	
 private:
 	NavigationView& nav_;
+
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
 	
 	enum tx_modes {
 		NORMAL = 0,
diff --git a/firmware/application/apps/tpms_app.cpp b/firmware/application/apps/tpms_app.cpp
index 7858d7a2..69e137e9 100644
--- a/firmware/application/apps/tpms_app.cpp
+++ b/firmware/application/apps/tpms_app.cpp
@@ -151,6 +151,16 @@ TPMSAppView::TPMSAppView(NavigationView&) {
 		&options_type,
 	});
 
+	// load app settings
+	auto rc = settings.load("rx_tpms", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		field_rf_amp.set_value(app_settings.rx_amp);
+		options_band.set_by_value(app_settings.rx_frequency);
+	}
+	else options_band.set_by_value(receiver_model.tuning_frequency());
+
 	radio::enable({
 		tuning_frequency(),
 		sampling_rate,
@@ -184,6 +194,12 @@ TPMSAppView::TPMSAppView(NavigationView&) {
 }
 
 TPMSAppView::~TPMSAppView() {
+
+
+	// save app settings
+	app_settings.rx_frequency = target_frequency_;
+	settings.save("rx_tpms", &app_settings);
+
 	radio::disable();
 
 	baseband::shutdown();
diff --git a/firmware/application/apps/tpms_app.hpp b/firmware/application/apps/tpms_app.hpp
index 2d9b670d..9544554f 100644
--- a/firmware/application/apps/tpms_app.hpp
+++ b/firmware/application/apps/tpms_app.hpp
@@ -27,7 +27,7 @@
 #include "ui_receiver.hpp"
 #include "ui_rssi.hpp"
 #include "ui_channel.hpp"
-
+#include "app_settings.hpp"
 #include "event_m0.hpp"
 
 #include "log_file.hpp"
@@ -110,6 +110,10 @@ private:
 	static constexpr uint32_t sampling_rate = 2457600;
 	static constexpr uint32_t baseband_bandwidth = 1750000;
 
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	MessageHandlerRegistration message_handler_packet {
 		Message::ID::TPMSPacket,
 		[this](Message* const p) {
diff --git a/firmware/application/apps/ui_adsb_rx.cpp b/firmware/application/apps/ui_adsb_rx.cpp
index 1731061f..1ae332ee 100644
--- a/firmware/application/apps/ui_adsb_rx.cpp
+++ b/firmware/application/apps/ui_adsb_rx.cpp
@@ -309,8 +309,12 @@ void ADSBRxView::focus() {
 }
 
 ADSBRxView::~ADSBRxView() {
-	receiver_model.set_tuning_frequency(prevFreq);
 
+	// save app settings
+	settings.save("rx_adsb", &app_settings);
+
+	//TODO: once all apps keep there own settin previous frequency logic can be removed
+	receiver_model.set_tuning_frequency(prevFreq);
 	rtc_time::signal_tick_second -= signal_token_tick_second;
 	receiver_model.disable();
 	baseband::shutdown();
@@ -458,6 +462,21 @@ ADSBRxView::ADSBRxView(NavigationView& nav) {
 		&recent_entries_view
 	});
 	
+
+	// load app settings
+	auto rc = settings.load("rx_adsb", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		field_rf_amp.set_value(app_settings.rx_amp);
+	}
+	else
+	{
+		field_lna.set_value(40);
+		field_vga.set_value(40);
+	}
+
+
 	recent_entries_view.set_parent_rect({ 0, 16, 240, 272 });
 	recent_entries_view.on_select = [this, &nav](const AircraftRecentEntry& entry) {
 		detailed_entry_key = entry.key();
@@ -478,8 +497,6 @@ ADSBRxView::ADSBRxView(NavigationView& nav) {
 	baseband::set_adsb();
 	
 	receiver_model.set_tuning_frequency(1090000000);
-	field_lna.set_value(40);
-	field_vga.set_value(40);
 	receiver_model.set_modulation(ReceiverModel::Mode::SpectrumAnalysis);
 	receiver_model.set_sampling_rate(2000000);
 	receiver_model.set_baseband_bandwidth(2500000);
diff --git a/firmware/application/apps/ui_adsb_rx.hpp b/firmware/application/apps/ui_adsb_rx.hpp
index 879e9d8c..e882b8db 100644
--- a/firmware/application/apps/ui_adsb_rx.hpp
+++ b/firmware/application/apps/ui_adsb_rx.hpp
@@ -32,7 +32,7 @@
 #include "log_file.hpp"
 #include "adsb.hpp"
 #include "message.hpp"
-
+#include "app_settings.hpp"
 #include "crc.hpp"
 
 using namespace adsb;
@@ -372,6 +372,9 @@ private:
 	std::unique_ptr<ADSBLogger> logger { };
 	void on_frame(const ADSBFrameMessage * message);
 	void on_tick_second();
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
 	
 	const RecentEntriesColumns columns { {
 #if false
diff --git a/firmware/application/apps/ui_adsb_tx.cpp b/firmware/application/apps/ui_adsb_tx.cpp
index 198d2295..918e744c 100644
--- a/firmware/application/apps/ui_adsb_tx.cpp
+++ b/firmware/application/apps/ui_adsb_tx.cpp
@@ -284,6 +284,11 @@ void ADSBTxView::focus() {
 }
 
 ADSBTxView::~ADSBTxView() {
+
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_adsb", &app_settings);
+
 	transmitter_model.disable();
 	baseband::shutdown();
 }
@@ -334,8 +339,16 @@ ADSBTxView::ADSBTxView(
 		&view_squawk,
 		&text_frame,
 		&tx_view
-	});
-	
+	});	
+
+	// load app settings
+	auto rc = settings.load("tx_adsb", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
+
 	tx_view.on_edit_frequency = [this, &nav]() {
 		auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
 		new_view->on_changed = [this](rf::Frequency f) {
diff --git a/firmware/application/apps/ui_adsb_tx.hpp b/firmware/application/apps/ui_adsb_tx.hpp
index 0cf07f19..8556f6e8 100644
--- a/firmware/application/apps/ui_adsb_tx.hpp
+++ b/firmware/application/apps/ui_adsb_tx.hpp
@@ -28,6 +28,7 @@
 #include "ui_transmitter.hpp"
 #include "message.hpp"
 #include "transmitter_model.hpp"
+#include "app_settings.hpp"
 #include "portapack.hpp"
 
 using namespace adsb;
@@ -189,6 +190,10 @@ private:
 		-1,
 		-1
 	};*/
+
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
 	
 	//tx_modes tx_mode = IDLE;
 	NavigationView& nav_;
diff --git a/firmware/application/apps/ui_afsk_rx.cpp b/firmware/application/apps/ui_afsk_rx.cpp
index 4b8fc3e7..54792f57 100644
--- a/firmware/application/apps/ui_afsk_rx.cpp
+++ b/firmware/application/apps/ui_afsk_rx.cpp
@@ -66,6 +66,15 @@ AFSKRxView::AFSKRxView(NavigationView& nav) {
 		&console
 	});
 	
+	// load app settings
+	auto rc = settings.load("rx_afsk", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		field_rf_amp.set_value(app_settings.rx_amp);
+	}
+
+
 	// DEBUG
 	record_view.on_error = [&nav](std::string message) {
 		nav.display_modal("Error", message);
@@ -164,6 +173,11 @@ void AFSKRxView::on_data(uint32_t value, bool is_data) {
 }
 
 AFSKRxView::~AFSKRxView() {
+
+	// save app settings
+	app_settings.rx_frequency = field_frequency.value();
+	settings.save("rx_afsk", &app_settings);
+
 	audio::output::stop();
 	receiver_model.disable();
 	baseband::shutdown();
diff --git a/firmware/application/apps/ui_afsk_rx.hpp b/firmware/application/apps/ui_afsk_rx.hpp
index 86f0f28f..dccf0e01 100644
--- a/firmware/application/apps/ui_afsk_rx.hpp
+++ b/firmware/application/apps/ui_afsk_rx.hpp
@@ -27,7 +27,7 @@
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
 #include "ui_record_view.hpp"	// DEBUG
-
+#include "app_settings.hpp"
 #include "log_file.hpp"
 #include "utility.hpp"
 
@@ -57,6 +57,10 @@ public:
 private:
 	void on_data(uint32_t value, bool is_data);
 	
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	uint8_t console_color { 0 };
 	uint32_t prev_value { 0 };
 	std::string str_log { "" };
diff --git a/firmware/application/apps/ui_aprs_rx.cpp b/firmware/application/apps/ui_aprs_rx.cpp
index 1bcfd273..c1f16893 100644
--- a/firmware/application/apps/ui_aprs_rx.cpp
+++ b/firmware/application/apps/ui_aprs_rx.cpp
@@ -98,6 +98,15 @@ APRSRxView::APRSRxView(NavigationView& nav, Rect parent_rect) : View(parent_rect
 		&console
 	});
 	
+	// load app settings
+	auto rc = settings.load("rx_aprs", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		field_rf_amp.set_value(app_settings.rx_amp);
+	}
+
+
 	// DEBUG
 	record_view.on_error = [&nav](std::string message) {
 		nav.display_modal("Error", message);
@@ -211,6 +220,10 @@ void APRSRxView::on_show(){
 }
 
 APRSRxView::~APRSRxView() {
+
+	// save app settings
+	settings.save("rx_aprs", &app_settings);
+
 	audio::output::stop();
 	receiver_model.disable();
 	baseband::shutdown();
diff --git a/firmware/application/apps/ui_aprs_rx.hpp b/firmware/application/apps/ui_aprs_rx.hpp
index 9ea29559..1a37df92 100644
--- a/firmware/application/apps/ui_aprs_rx.hpp
+++ b/firmware/application/apps/ui_aprs_rx.hpp
@@ -28,7 +28,7 @@
 #include "ui_receiver.hpp"
 #include "ui_record_view.hpp"	// DEBUG
 #include "ui_geomap.hpp"
-
+#include "app_settings.hpp"
 #include "recent_entries.hpp"
 #include "ui_tabview.hpp"
 
@@ -131,6 +131,7 @@ private:
 	GeoMapView* geomap_view { nullptr };
 	bool send_updates { false };
 	
+
 	Console console {
 		{ 0, 0 * 16, 240, 224 }		
 	};
@@ -192,6 +193,11 @@ private:
 	void on_data(uint32_t value, bool is_data);
 	bool reset_console = false;
 	
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
+
 	uint8_t console_color { 0 };
 	std::string str_log { "" };
 
diff --git a/firmware/application/apps/ui_aprs_tx.cpp b/firmware/application/apps/ui_aprs_tx.cpp
index 87ff6927..5d275931 100644
--- a/firmware/application/apps/ui_aprs_tx.cpp
+++ b/firmware/application/apps/ui_aprs_tx.cpp
@@ -43,6 +43,10 @@ void APRSTXView::focus() {
 }
 
 APRSTXView::~APRSTXView() {
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_aprs", &app_settings);
+
 	transmitter_model.disable();
 	baseband::shutdown();
 }
@@ -66,7 +70,7 @@ void APRSTXView::start_tx() {
 		1200,
 		2200,
 		1,
-		10000,	//transmitter_model.channel_bandwidth(),
+		10000,	//APRS uses fixed 10k bandwidth
 		8
 	);
 }
@@ -95,6 +99,15 @@ APRSTXView::APRSTXView(NavigationView& nav) {
 		&tx_view
 	});
 	
+
+	// load app settings
+	auto rc = settings.load("tx_aprs", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
+
 	button_set.on_select = [this, &nav](Button&) {
 		text_prompt(
 			nav,
diff --git a/firmware/application/apps/ui_aprs_tx.hpp b/firmware/application/apps/ui_aprs_tx.hpp
index 97032107..16872b11 100644
--- a/firmware/application/apps/ui_aprs_tx.hpp
+++ b/firmware/application/apps/ui_aprs_tx.hpp
@@ -29,6 +29,7 @@
 
 #include "message.hpp"
 #include "transmitter_model.hpp"
+#include "app_settings.hpp"
 #include "portapack.hpp"
 
 namespace ui {
@@ -40,17 +41,14 @@ public:
 	
 	void focus() override;
 	
-	std::string title() const override { return "APRS TX (beta)"; };
+	std::string title() const override { return "APRS TX"; };
 
 private:
-	/*enum tx_modes {
-		IDLE = 0,
-		SINGLE,
-		SEQUENCE
-	};
-	
-	tx_modes tx_mode = IDLE;*/
 	
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	std::string payload { "" };
 	
 	void start_tx();
@@ -103,7 +101,7 @@ private:
 	TransmitterView tx_view {
 		16 * 16,
 		5000,
-		10
+		0 // disable setting bandwith, since APRS used fixed 10k bandwidth
 	};
 	
 	MessageHandlerRegistration message_handler_tx_progress {
diff --git a/firmware/application/apps/ui_bht_tx.cpp b/firmware/application/apps/ui_bht_tx.cpp
index 6021a240..b70f4d17 100644
--- a/firmware/application/apps/ui_bht_tx.cpp
+++ b/firmware/application/apps/ui_bht_tx.cpp
@@ -96,9 +96,9 @@ void BHTView::on_tx_progress(const uint32_t progress, const bool done) {
 	if (target_system == XYLOS) {
 		if (done) {
 			if (tx_mode == SINGLE) {
-				if (checkbox_cligno.value()) {
+				if (checkbox_flashing.value()) {
 					// TODO: Thread !
-					chThdSleepMilliseconds(field_tempo.value() * 1000);	// Dirty :(
+					chThdSleepMilliseconds(field_speed.value() * 1000);	// Dirty :(
 					view_xylos.flip_relays();
 					start_tx();
 				} else
@@ -120,9 +120,9 @@ void BHTView::on_tx_progress(const uint32_t progress, const bool done) {
 			} else {
 				view_EPAR.half = false;
 				if (tx_mode == SINGLE) {
-					if (checkbox_cligno.value()) {
+					if (checkbox_flashing.value()) {
 						// TODO: Thread !
-						chThdSleepMilliseconds(field_tempo.value() * 1000);	// Dirty :(
+						chThdSleepMilliseconds(field_speed.value() * 1000);	// Dirty :(
 						view_EPAR.flip_relays();
 						start_tx();
 					} else
@@ -140,6 +140,10 @@ void BHTView::on_tx_progress(const uint32_t progress, const bool done) {
 }
 
 BHTView::~BHTView() {
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_bht", &app_settings);
+
 	transmitter_model.disable();
 }
 
@@ -150,13 +154,22 @@ BHTView::BHTView(NavigationView& nav) {
 		&view_xylos,
 		&view_EPAR,
 		&checkbox_scan,
-		&checkbox_cligno,
-		&field_tempo,
+		&checkbox_flashing,
+		&field_speed,
 		&progressbar,
 		&tx_view
 	});
 	
-	field_tempo.set_value(1);
+	// load app settings
+	auto rc = settings.load("tx_bht", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
+
+	field_speed.set_value(1);
 	
 	tx_view.on_edit_frequency = [this, &nav]() {
 		auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
diff --git a/firmware/application/apps/ui_bht_tx.hpp b/firmware/application/apps/ui_bht_tx.hpp
index 01e6b48c..17768e2b 100644
--- a/firmware/application/apps/ui_bht_tx.hpp
+++ b/firmware/application/apps/ui_bht_tx.hpp
@@ -32,6 +32,7 @@
 #include "message.hpp"
 #include "transmitter_model.hpp"
 #include "encoders.hpp"
+#include "app_settings.hpp"
 #include "portapack.hpp"
 
 namespace ui {
@@ -50,11 +51,11 @@ public:
 private:
 	Labels labels {
 		{ { 8 * 8, 1 * 8 }, "Header:", Color::light_grey() },
-		{ { 4 * 8, 3 * 8 }, "Code ville:", Color::light_grey() },
-		{ { 7 * 8, 5 * 8 }, "Famille:", Color::light_grey() },
-		{ { 2 * 8, 7 * 8 + 2 }, "Sous-famille:", Color::light_grey() },
-		{ { 2 * 8, 11 * 8 }, "ID recepteur:", Color::light_grey() },
-		{ { 2 * 8, 14 * 8 }, "Relais:", Color::light_grey() }
+		{ { 4 * 8, 3 * 8 }, "City code:", Color::light_grey() },
+		{ { 7 * 8, 5 * 8 }, "Family:", Color::light_grey() },
+		{ { 2 * 8, 7 * 8 + 2 }, "Subfamily:", Color::light_grey() },
+		{ { 2 * 8, 11 * 8 }, "Receiver ID:", Color::light_grey() },
+		{ { 2 * 8, 14 * 8 }, "Relay:", Color::light_grey() }
 	};
 	
 	NumberField field_header_a {
@@ -98,8 +99,8 @@ private:
 	
 	Checkbox checkbox_wcsubfamily {
 		{ 20 * 8, 6 * 8 + 6 },
-		6,
-		"Toutes"
+		3,
+		"All"
 	};
 	
 	NumberField field_receiver {
@@ -111,8 +112,8 @@ private:
 	};
 	Checkbox checkbox_wcid {
 		{ 20 * 8, 10 * 8 + 4 },
-		4,
-		"Tous"
+		3,
+		"All"
 	};
 	
 	std::array<ImageOptionsField, 4> relay_states { };
@@ -139,9 +140,9 @@ public:
 	
 private:
 	Labels labels {
-		{ { 4 * 8, 1 * 8 }, "Code ville:", Color::light_grey() },
-		{ { 8 * 8, 3 * 8 }, "Groupe:", Color::light_grey() },
-		{ { 8 * 8, 7 * 8 }, "Relais:", Color::light_grey() }
+		{ { 4 * 8, 1 * 8 }, "City code:", Color::light_grey() },
+		{ { 8 * 8, 3 * 8 }, "Group:", Color::light_grey() },
+		{ { 8 * 8, 7 * 8 }, "Relay:", Color::light_grey() }
 	};
 	
 	NumberField field_city {
@@ -181,6 +182,10 @@ public:
 	std::string title() const override { return "BHT Xy/EP TX"; };
 
 private:
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	void on_tx_progress(const uint32_t progress, const bool done);
 	void start_tx();
 	void stop_tx();
@@ -220,12 +225,12 @@ private:
 		"Scan"
 	};
 	
-	Checkbox checkbox_cligno {
+	Checkbox checkbox_flashing {
 		{ 16 * 8, 25 * 8 },
-		6,
-		"Cligno"
+		8,
+		"Flashing"
 	};
-	NumberField field_tempo {
+	NumberField field_speed {
 		{ 26 * 8, 25 * 8 + 4 },
 		2,
 		{ 1, 99 },
diff --git a/firmware/application/apps/ui_btle_rx.cpp b/firmware/application/apps/ui_btle_rx.cpp
index d4b9afee..226f9dc1 100644
--- a/firmware/application/apps/ui_btle_rx.cpp
+++ b/firmware/application/apps/ui_btle_rx.cpp
@@ -60,6 +60,15 @@ BTLERxView::BTLERxView(NavigationView& nav) {
 		&console
 	});
 	
+	// load app settings
+	auto rc = settings.load("rx_btle", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		field_rf_amp.set_value(app_settings.rx_amp);
+	}
+
+
 	// DEBUG
 	record_view.on_error = [&nav](std::string message) {
 		nav.display_modal("Error", message);
@@ -152,6 +161,11 @@ void BTLERxView::on_data(uint32_t value, bool is_data) {
 }
 
 BTLERxView::~BTLERxView() {
+
+	// save app settings
+	app_settings.rx_frequency = field_frequency.value();
+	settings.save("rx_btle", &app_settings);
+
 	audio::output::stop();
 	receiver_model.disable();
 	baseband::shutdown();
diff --git a/firmware/application/apps/ui_btle_rx.hpp b/firmware/application/apps/ui_btle_rx.hpp
index 9e331eef..91bf0710 100644
--- a/firmware/application/apps/ui_btle_rx.hpp
+++ b/firmware/application/apps/ui_btle_rx.hpp
@@ -27,6 +27,7 @@
 #include "ui.hpp"
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
+#include "app_settings.hpp"
 #include "ui_record_view.hpp"	// DEBUG
 
 #include "utility.hpp"
@@ -45,6 +46,11 @@ public:
 private:
 	void on_data(uint32_t value, bool is_data);
 	
+
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	uint8_t console_color { 0 };
 	uint32_t prev_value { 0 };
 	std::string str_log { "" };
diff --git a/firmware/application/apps/ui_coasterp.cpp b/firmware/application/apps/ui_coasterp.cpp
index cd918dda..446ad841 100644
--- a/firmware/application/apps/ui_coasterp.cpp
+++ b/firmware/application/apps/ui_coasterp.cpp
@@ -37,6 +37,10 @@ void CoasterPagerView::focus() {
 }
 
 CoasterPagerView::~CoasterPagerView() {
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_coaster", &app_settings);
+
 	transmitter_model.disable();
 	baseband::shutdown();
 }
@@ -119,6 +123,15 @@ CoasterPagerView::CoasterPagerView(NavigationView& nav) {
 		&tx_view
 	});
 	
+	// load app settings
+	auto rc = settings.load("tx_coaster", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
+
 	// Bytes to nibbles
 	for (c = 0; c < 16; c++)
 		sym_data.set_sym(c, (data_init[c >> 1] >> ((c & 1) ? 0 : 4)) & 0x0F);
diff --git a/firmware/application/apps/ui_coasterp.hpp b/firmware/application/apps/ui_coasterp.hpp
index 68963302..873d3abe 100644
--- a/firmware/application/apps/ui_coasterp.hpp
+++ b/firmware/application/apps/ui_coasterp.hpp
@@ -28,6 +28,7 @@
 
 #include "message.hpp"
 #include "transmitter_model.hpp"
+#include "app_settings.hpp"
 #include "portapack.hpp"
 
 namespace ui {
@@ -50,6 +51,10 @@ private:
 	
 	tx_modes tx_mode = IDLE;
 	
+	// app save settings
+	std::app_settings 		settings { };
+	std::app_settings::AppSettings 	app_settings { };
+
 	void start_tx();
 	void generate_frame();
 	void on_tx_progress(const uint32_t progress, const bool done);
diff --git a/firmware/application/apps/ui_debug.cpp b/firmware/application/apps/ui_debug.cpp
index a1856e25..e9018c1c 100644
--- a/firmware/application/apps/ui_debug.cpp
+++ b/firmware/application/apps/ui_debug.cpp
@@ -31,6 +31,7 @@
 #include "ui_sd_card_debug.hpp"
 
 #include "portapack.hpp"
+#include "portapack_persistent_memory.hpp"
 using namespace portapack;
 
 #include "irq_controls.hpp"
@@ -345,8 +346,11 @@ DebugPeripheralsMenuView::DebugPeripheralsMenuView(NavigationView& nav) {
 /* DebugMenuView *********************************************************/
 
 DebugMenuView::DebugMenuView(NavigationView& nav) {
+    if( portapack::persistent_memory::show_gui_return_icon() )
+    {
+        add_items( { { "..", 		ui::Color::light_grey(),&bitmap_icon_previous,	[&nav](){ nav.pop(); } } } );
+    }
 	add_items({
-		//{ "..",				ui::Color::light_grey(),&bitmap_icon_previous,	[&nav](){ nav.pop(); } },
 		{ "Memory", 		ui::Color::dark_cyan(),	&bitmap_icon_memory,	[&nav](){ nav.push<DebugMemoryView>(); } },
 		//{ "Radio State",	ui::Color::white(),	nullptr,	[&nav](){ nav.push<NotImplementedView>(); } },
 		{ "SD Card",		ui::Color::dark_cyan(),	&bitmap_icon_sdcard,	[&nav](){ nav.push<SDCardDebugView>(); } },
diff --git a/firmware/application/apps/ui_encoders.cpp b/firmware/application/apps/ui_encoders.cpp
index e15defd1..05c90a3f 100644
--- a/firmware/application/apps/ui_encoders.cpp
+++ b/firmware/application/apps/ui_encoders.cpp
@@ -203,6 +203,10 @@ void EncodersView::focus() {
 }
 
 EncodersView::~EncodersView() {
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_ook", &app_settings);
+
 	transmitter_model.disable();
 	baseband::shutdown();
 }
@@ -335,6 +339,15 @@ EncodersView::EncodersView(
 		&tx_view
 	});
 	
+	// load app settings
+	auto rc = settings.load("tx_ook", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
+
 	tx_view.on_edit_frequency = [this, &nav]() {
 		auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.tuning_frequency());
 		new_view->on_changed = [this](rf::Frequency f) {
diff --git a/firmware/application/apps/ui_encoders.hpp b/firmware/application/apps/ui_encoders.hpp
index 7eef80d5..ac206f6e 100644
--- a/firmware/application/apps/ui_encoders.hpp
+++ b/firmware/application/apps/ui_encoders.hpp
@@ -26,6 +26,7 @@
 #include "transmitter_model.hpp"
 #include "encoders.hpp"
 #include "de_bruijn.hpp"
+#include "app_settings.hpp"
 
 using namespace encoders;
 
@@ -169,6 +170,10 @@ private:
 		SCAN
 	};
 	
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	tx_modes tx_mode = IDLE;
 	uint8_t repeat_index { 0 };
 	uint8_t repeat_min { 0 };
diff --git a/firmware/application/apps/ui_keyfob.cpp b/firmware/application/apps/ui_keyfob.cpp
index 6492cd6b..b5bfb145 100644
--- a/firmware/application/apps/ui_keyfob.cpp
+++ b/firmware/application/apps/ui_keyfob.cpp
@@ -136,6 +136,9 @@ void KeyfobView::focus() {
 }
 
 KeyfobView::~KeyfobView() {
+	// save app settings
+	settings.save("tx_keyfob", &app_settings);
+
 	transmitter_model.disable();
 	baseband::shutdown();
 }
@@ -214,6 +217,13 @@ KeyfobView::KeyfobView(
 		&tx_view
 	});
 	
+	// load app settings
+	auto rc = settings.load("tx_keyfob", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
+
 	frame[0] = 0x55;
 	update_symfields();
 	
diff --git a/firmware/application/apps/ui_keyfob.hpp b/firmware/application/apps/ui_keyfob.hpp
index 0c723340..3cc8419a 100644
--- a/firmware/application/apps/ui_keyfob.hpp
+++ b/firmware/application/apps/ui_keyfob.hpp
@@ -23,6 +23,7 @@
 #include "ui.hpp"
 #include "ui_transmitter.hpp"
 #include "transmitter_model.hpp"
+#include "app_settings.hpp"
 #include "encoders.hpp"
 
 using namespace encoders;
@@ -36,11 +37,15 @@ public:
 	
 	void focus() override;
 	
-	std::string title() const override { return "Key fob TX (beta)"; };
+	std::string title() const override { return "Key fob TX"; };
 
 private:
 	NavigationView& nav_;
 	
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	// 1013210ns / bit
 	static constexpr uint32_t subaru_samples_per_bit = (OOK_SAMPLERATE * 0.00101321);
 	static constexpr uint32_t repeats = 4;
diff --git a/firmware/application/apps/ui_lcr.cpp b/firmware/application/apps/ui_lcr.cpp
index e664f82e..6f5b1489 100644
--- a/firmware/application/apps/ui_lcr.cpp
+++ b/firmware/application/apps/ui_lcr.cpp
@@ -39,6 +39,10 @@ void LCRView::focus() {
 }
 
 LCRView::~LCRView() {
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_lcr", &app_settings);
+
 	transmitter_model.disable();
 	baseband::shutdown();
 }
@@ -173,6 +177,15 @@ LCRView::LCRView(NavigationView& nav) {
 		&tx_view
 	});
 	
+	// load app settings
+	auto rc = settings.load("tx_lcr", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
+
 	options_scanlist.set_selected_index(0);
 	
 	const auto button_set_am_fn = [this, &nav](Button& button) {
diff --git a/firmware/application/apps/ui_lcr.hpp b/firmware/application/apps/ui_lcr.hpp
index 096a597a..bd5b4aac 100644
--- a/firmware/application/apps/ui_lcr.hpp
+++ b/firmware/application/apps/ui_lcr.hpp
@@ -27,6 +27,7 @@
 
 #include "message.hpp"
 #include "transmitter_model.hpp"
+#include "app_settings.hpp"
 
 namespace ui {
 	
@@ -81,6 +82,10 @@ private:
 		SCAN
 	};
 	
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	tx_modes tx_mode = IDLE;
 	uint8_t scan_count { 0 }, scan_index { 0 };
 	uint32_t scan_progress { 0 };
diff --git a/firmware/application/apps/ui_mictx.cpp b/firmware/application/apps/ui_mictx.cpp
index bda0f278..68d98212 100644
--- a/firmware/application/apps/ui_mictx.cpp
+++ b/firmware/application/apps/ui_mictx.cpp
@@ -186,7 +186,7 @@ void MicTXView::rxaudio(bool is_on) {
 
 		baseband::run_image(portapack::spi_flash::image_tag_mic_tx);
 		audio::output::stop();
-		audio::input::start(ak4951_alc_GUI_selected);	// set up audio input =  mic config of any audio coded AK4951/WM8731, (in WM8731 parameter will be ignored)
+		audio::input::start();	// set up audio input =  mic config of any audio coded AK4951/WM8731, (in WM8731 parameter will be ignored)
 		portapack::pin_i2s0_rx_sda.mode(3);
 		configure_baseband();
 	}
@@ -212,7 +212,7 @@ MicTXView::MicTXView(
 	baseband::run_image(portapack::spi_flash::image_tag_mic_tx);
 	
 	
-	if ( audio_codec_wm8731.detected() ) {
+	if (true ) {       // Temporary , disabling ALC feature , (pending to solve -No Audio in Mic app ,in some H2/H2+ WM /QFP100 CPLS users-  if ( audio_codec_wm8731.detected() ) {
 	add_children({		
 		&labels_WM8731,		// we have audio codec WM8731, same MIC menu  as original.
 		&vumeter,
@@ -285,7 +285,7 @@ MicTXView::MicTXView(
 	
 	options_ak4951_alc_mode.on_change = [this](size_t, int8_t v) {
 	      ak4951_alc_GUI_selected  = v;
-		  audio::input::start(ak4951_alc_GUI_selected);
+		  audio::input::start();
 	};
 	// options_ak4951_alc_mode.set_selected_index(0);
 	 
@@ -341,23 +341,37 @@ MicTXView::MicTXView(
 				enable_dsb = false;
 				field_bw.set_value(transmitter_model.channel_bandwidth() / 1000);
 				//if (rx_enabled)
-				rxaudio(rx_enabled); //Update now if we have RX audio on
+				rxaudio(rx_enabled); 					//Update now if we have RX audio on
+				options_tone_key.hidden(0);				// we are in FM mode , we should have active the Key-tones & CTCSS option.
+				field_rxbw.hidden(0);					// we are in FM mode,  we need to allow the user set up of the RX NFM BW selection (8K5, 11K, 16K) 
 				break;
 			case 1:
 				enable_am = true;
-				rxaudio(rx_enabled); //Update now if we have RX audio on
+				rxaudio(rx_enabled); 					//Update now if we have RX audio on
+				options_tone_key.set_selected_index(0);	// we are NOT in FM mode ,  we reset the possible previous key-tones &CTCSS selection.
+				set_dirty();							// Refresh display	
+				options_tone_key.hidden(1);				// we hide that Key-tones & CTCSS input selecction, (no meaning in AM/DSB/SSB).
+				field_rxbw.hidden(1);					// we hide the NFM BW selection in other modes non_FM  (no meaning in AM/DSB/SSB)
+				check_rogerbeep.hidden(0);				// make visible again the "rogerbeep" selection.
 				break;
 			case 2:
 				enable_usb = true;
-				rxaudio(rx_enabled); //Update now if we have RX audio on
+				rxaudio(rx_enabled); 					//Update now if we have RX audio on
+				check_rogerbeep.set_value(false);		// reset the possible activation of roger beep, because it is not compatible with SSB , by now. 
+				check_rogerbeep.hidden(1);				// hide that roger beep selection. 
+				set_dirty();							// Refresh display
 				break;
 			case 3:
 				enable_lsb = true;
-				rxaudio(rx_enabled); //Update now if we have RX audio on
+				rxaudio(rx_enabled); 					//Update now if we have RX audio on
+				check_rogerbeep.set_value(false);		// reset the possible activation of roger beep, because it is not compatible with SSB , by now. 
+				check_rogerbeep.hidden(1);				// hide that roger beep selection. 
+				set_dirty();							// Refresh display
 				break;
 			case 4:
 				enable_dsb = true;
-				rxaudio(rx_enabled); //Update now if we have RX audio on
+				rxaudio(rx_enabled); 					//Update now if we have RX audio on
+				check_rogerbeep.hidden(0);				// make visible again the "rogerbeep" selection.
 				break;
 		}
 		//configure_baseband();
@@ -525,7 +539,7 @@ MicTXView::MicTXView(
 	set_tx(false);
 	
 	audio::set_rate(audio::Rate::Hz_24000);
-	audio::input::start(ak4951_alc_GUI_selected);		// originally , audio::input::start();  (we added parameter)
+	audio::input::start();		// originally , audio::input::start();  (we added parameter)
 }
 
 MicTXView::~MicTXView() {
diff --git a/firmware/application/apps/ui_morse.cpp b/firmware/application/apps/ui_morse.cpp
index ebe44b6d..1c9468d9 100644
--- a/firmware/application/apps/ui_morse.cpp
+++ b/firmware/application/apps/ui_morse.cpp
@@ -97,6 +97,10 @@ void MorseView::focus() {
 }
 
 MorseView::~MorseView() {
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_morse", &app_settings);
+
 	transmitter_model.disable();
 	baseband::shutdown();
 }
@@ -203,6 +207,15 @@ MorseView::MorseView(
 		&tx_view
 	});
 	
+	// load app settings
+	auto rc = settings.load("tx_morse", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
+
 	// Default settings
 	field_speed.set_value(15);					// 15wps
 	field_tone.set_value(700);					// 700Hz FM tone
diff --git a/firmware/application/apps/ui_morse.hpp b/firmware/application/apps/ui_morse.hpp
index 5079fea8..90b60b49 100644
--- a/firmware/application/apps/ui_morse.hpp
+++ b/firmware/application/apps/ui_morse.hpp
@@ -27,7 +27,7 @@
 #include "ui_widget.hpp"
 #include "ui_navigation.hpp"
 #include "ui_transmitter.hpp"
-
+#include "app_settings.hpp"
 #include "portapack.hpp"
 #include "message.hpp"
 #include "volume.hpp"
@@ -67,6 +67,10 @@ private:
 	std::string message { };
 	uint32_t time_units { 0 };
 	
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	enum modulation_t {
 		CW = 0,
 		FM = 1
diff --git a/firmware/application/apps/ui_nrf_rx.cpp b/firmware/application/apps/ui_nrf_rx.cpp
index 32982ae6..d5d916f8 100644
--- a/firmware/application/apps/ui_nrf_rx.cpp
+++ b/firmware/application/apps/ui_nrf_rx.cpp
@@ -60,6 +60,14 @@ NRFRxView::NRFRxView(NavigationView& nav) {
 		&console
 	});
 	
+	// load app settings
+	auto rc = settings.load("rx_nrf", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		field_rf_amp.set_value(app_settings.rx_amp);
+	}
+
 	// DEBUG
 	record_view.on_error = [&nav](std::string message) {
 		nav.display_modal("Error", message);
@@ -157,6 +165,11 @@ void NRFRxView::on_data(uint32_t value, bool is_data) {
 }
 
 NRFRxView::~NRFRxView() {
+
+	// save app settings
+	app_settings.rx_frequency = field_frequency.value();
+	settings.save("rx_nrf", &app_settings);
+
 	audio::output::stop();
 	receiver_model.disable();
 	baseband::shutdown();
diff --git a/firmware/application/apps/ui_nrf_rx.hpp b/firmware/application/apps/ui_nrf_rx.hpp
index 4f72b25b..18a6f814 100644
--- a/firmware/application/apps/ui_nrf_rx.hpp
+++ b/firmware/application/apps/ui_nrf_rx.hpp
@@ -27,6 +27,7 @@
 #include "ui.hpp"
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
+#include "app_settings.hpp"
 #include "ui_record_view.hpp"	// DEBUG
 
 #include "utility.hpp"
@@ -45,6 +46,10 @@ public:
 private:
 	void on_data(uint32_t value, bool is_data);
 	
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	uint8_t console_color { 0 };
 	uint32_t prev_value { 0 };
 	std::string str_log { "" };
diff --git a/firmware/application/apps/ui_pocsag_tx.cpp b/firmware/application/apps/ui_pocsag_tx.cpp
index 56ced719..58de068e 100644
--- a/firmware/application/apps/ui_pocsag_tx.cpp
+++ b/firmware/application/apps/ui_pocsag_tx.cpp
@@ -38,6 +38,10 @@ void POCSAGTXView::focus() {
 }
 
 POCSAGTXView::~POCSAGTXView() {
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_pocsag", &app_settings);
+
 	transmitter_model.disable();
 	baseband::shutdown();
 }
@@ -141,6 +145,15 @@ POCSAGTXView::POCSAGTXView(
 		&tx_view
 	});
 
+	// load app settings
+	auto rc = settings.load("tx_pocsag", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
+
 	options_bitrate.set_selected_index(1);	// 1200bps
 	options_type.set_selected_index(0);		// Address only
 	
diff --git a/firmware/application/apps/ui_pocsag_tx.hpp b/firmware/application/apps/ui_pocsag_tx.hpp
index 0dfbc30a..470ce0fe 100644
--- a/firmware/application/apps/ui_pocsag_tx.hpp
+++ b/firmware/application/apps/ui_pocsag_tx.hpp
@@ -31,6 +31,7 @@
 #include "bch_code.hpp"
 #include "message.hpp"
 #include "transmitter_model.hpp"
+#include "app_settings.hpp"
 #include "pocsag.hpp"
 
 using namespace pocsag;
@@ -62,6 +63,10 @@ private:
 		5, 31, 21, 2
 	};
 	
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
 	void on_set_text(NavigationView& nav);
 	void on_tx_progress(const uint32_t progress, const bool done);
 	bool start_tx();
diff --git a/firmware/application/apps/ui_rds.cpp b/firmware/application/apps/ui_rds.cpp
index db9e2d2a..7e8f1da8 100644
--- a/firmware/application/apps/ui_rds.cpp
+++ b/firmware/application/apps/ui_rds.cpp
@@ -175,6 +175,10 @@ void RDSView::focus() {
 }
 
 RDSView::~RDSView() {
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_rds", &app_settings);
+
 	transmitter_model.disable();
 	baseband::shutdown();
 }
@@ -226,11 +230,17 @@ RDSView::RDSView(
 		&view_radiotext,
 		&view_datetime,
 		&view_audio,
-		//&options_countrycode,
-		//&options_coverage,
 		&tx_view,
 	});
-	
+
+	// load app settings
+	auto rc = settings.load("tx_rds", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}	
 	check_TP.set_value(true);
 	
 	sym_pi_code.set_sym(0, 0xF);
@@ -242,8 +252,6 @@ RDSView::RDSView(
 	};
 	
 	options_pty.set_selected_index(0);				// None
-	//options_countrycode.set_selected_index(18);		// Baguette du fromage
-	//options_coverage.set_selected_index(0);			// Local
 	
 	tx_view.on_edit_frequency = [this, &nav]() {
 		auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
diff --git a/firmware/application/apps/ui_rds.hpp b/firmware/application/apps/ui_rds.hpp
index 35d80ba4..bbffb1ed 100644
--- a/firmware/application/apps/ui_rds.hpp
+++ b/firmware/application/apps/ui_rds.hpp
@@ -24,7 +24,7 @@
 #include "ui_transmitter.hpp"
 #include "ui_textentry.hpp"
 #include "ui_tabview.hpp"
-
+#include "app_settings.hpp"
 #include "rds.hpp"
 
 using namespace rds;
@@ -150,6 +150,11 @@ private:
 	NavigationView& nav_;
 	RDS_flags rds_flags { };
 	
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };
+
+
 	std::vector<RDSGroup> frame_psn { };
 	std::vector<RDSGroup> frame_radiotext { };
 	std::vector<RDSGroup> frame_datetime { };
diff --git a/firmware/application/apps/ui_settings.cpp b/firmware/application/apps/ui_settings.cpp
index 5b3cc4d3..b5e033b3 100644
--- a/firmware/application/apps/ui_settings.cpp
+++ b/firmware/application/apps/ui_settings.cpp
@@ -234,6 +234,7 @@ SetUIView::SetUIView(NavigationView& nav) {
 		&checkbox_showsplash,
 		&checkbox_showclock,
 		&options_clockformat,
+		&checkbox_guireturnflag,
 		&button_save,
 		&button_cancel
 	});
@@ -242,6 +243,7 @@ SetUIView::SetUIView(NavigationView& nav) {
 	checkbox_speaker.set_value(persistent_memory::config_speaker());
 	checkbox_showsplash.set_value(persistent_memory::config_splash());
 	checkbox_showclock.set_value(!persistent_memory::hide_clock());
+	checkbox_guireturnflag.set_value(persistent_memory::show_gui_return_icon());
 	
 	uint32_t backlight_timer = persistent_memory::config_backlight_timer();
 	if (backlight_timer) {
@@ -257,12 +259,6 @@ SetUIView::SetUIView(NavigationView& nav) {
 		options_clockformat.set_selected_index(0);
 	}
 
-	//checkbox_speaker.on_select = [this](Checkbox&, bool v) {
-    	//	if (v) audio::output::speaker_mute();			//Just mute audio if speaker is disabled
-	//		persistent_memory::set_config_speaker(v);	//Store Speaker status
-        //	StatusRefreshMessage message { };			//Refresh status bar with/out speaker
-        //	EventDispatcher::send_message(message);
-    	//};
 
 	button_save.on_select = [&nav, this](Button&) {
 		if (checkbox_bloff.value())
@@ -284,6 +280,7 @@ SetUIView::SetUIView(NavigationView& nav) {
 	
 		persistent_memory::set_config_splash(checkbox_showsplash.value());
 		persistent_memory::set_clock_hidden(!checkbox_showclock.value());
+		persistent_memory::set_gui_return_icon(checkbox_guireturnflag.value());
 		persistent_memory::set_disable_touchscreen(checkbox_disable_touchscreen.value());
 		nav.pop();
 	};
@@ -296,6 +293,36 @@ void SetUIView::focus() {
 	button_save.focus();
 }
 
+
+// ---------------------------------------------------------
+// Appl. Settings
+// ---------------------------------------------------------
+SetAppSettingsView::SetAppSettingsView(NavigationView& nav) {
+	add_children({
+		&checkbox_load_app_settings,
+		&checkbox_save_app_settings,
+		&button_save,
+		&button_cancel
+	});
+	
+	checkbox_load_app_settings.set_value(persistent_memory::load_app_settings());
+	checkbox_save_app_settings.set_value(persistent_memory::save_app_settings());
+
+
+	button_save.on_select = [&nav, this](Button&) {
+		persistent_memory::set_load_app_settings(checkbox_load_app_settings.value());
+		persistent_memory::set_save_app_settings(checkbox_save_app_settings.value());
+		nav.pop();
+	};
+	button_cancel.on_select = [&nav, this](Button&) {
+		nav.pop();
+	};
+}
+
+void SetAppSettingsView::focus() {
+	button_save.focus();
+}
+
 SetAudioView::SetAudioView(NavigationView& nav) {
 	add_children({
 		&labels,
@@ -344,14 +371,22 @@ void SetQRCodeView::focus() {
 	button_save.focus();
 }
 
+// ---------------------------------------------------------
+// Settings main menu
+// ---------------------------------------------------------
 SettingsMenuView::SettingsMenuView(NavigationView& nav) {
+    if( portapack::persistent_memory::show_gui_return_icon() )
+    {
+        add_items( { { "..", 		ui::Color::light_grey(),&bitmap_icon_previous,	[&nav](){ nav.pop(); } } } );
+    }
 	add_items({
 		{ "Audio", 		ui::Color::dark_cyan(), &bitmap_icon_speaker,			[&nav](){ nav.push<SetAudioView>(); } },
 		{ "Radio",		ui::Color::dark_cyan(), &bitmap_icon_options_radio,		[&nav](){ nav.push<SetRadioView>(); } },
-		{ "User Interface", 		ui::Color::dark_cyan(), &bitmap_icon_options_ui,		[&nav](){ nav.push<SetUIView>(); } },
+		{ "User Interface", 	ui::Color::dark_cyan(), &bitmap_icon_options_ui,		[&nav](){ nav.push<SetUIView>(); } },
 		{ "Date/Time",		ui::Color::dark_cyan(), &bitmap_icon_options_datetime,		[&nav](){ nav.push<SetDateTimeView>(); } },
 		{ "Calibration",	ui::Color::dark_cyan(), &bitmap_icon_options_touch,		[&nav](){ nav.push<TouchCalibrationView>(); } },
-		{ "QR Code",		ui::Color::dark_cyan(), &bitmap_icon_qr_code,		[&nav](){ nav.push<SetQRCodeView>(); } }
+		{ "App Settings",	ui::Color::dark_cyan(), &bitmap_icon_setup,			[&nav](){ nav.push<SetAppSettingsView>(); } },
+		{ "QR Code",		ui::Color::dark_cyan(), &bitmap_icon_qr_code,			[&nav](){ nav.push<SetQRCodeView>(); } }
 	});
 	set_max_rows(2); // allow wider buttons
 }
diff --git a/firmware/application/apps/ui_settings.hpp b/firmware/application/apps/ui_settings.hpp
index 68c1e750..d1f3cb63 100644
--- a/firmware/application/apps/ui_settings.hpp
+++ b/firmware/application/apps/ui_settings.hpp
@@ -271,6 +271,45 @@ private:
 			{ "time and date", 1 }
 		}
 	};	
+
+    Checkbox checkbox_guireturnflag {	
+		{ 3 * 8, 14 * 16 },
+		25,
+		"add return icon in GUI"
+	};
+	
+	Button button_save {
+		{ 2 * 8, 16 * 16, 12 * 8, 32 },
+		"Save"
+	};
+	
+	Button button_cancel {
+		{ 16 * 8, 16 * 16, 12 * 8, 32 },
+		"Cancel",
+	};
+};
+
+class SetAppSettingsView : public View {
+public:
+	SetAppSettingsView(NavigationView& nav);
+	
+	void focus() override;
+	
+	std::string title() const override { return "App Settings"; };
+	
+private:
+
+	Checkbox checkbox_load_app_settings {
+		{ 3 * 8, 2 * 16 },
+		25,
+		"Load app settings"
+	};
+	
+	Checkbox checkbox_save_app_settings {
+		{ 3 * 8, 4 * 16 },
+		25,
+		"Save app settings"
+	};
 	
 	Button button_save {
 		{ 2 * 8, 16 * 16, 12 * 8, 32 },
diff --git a/firmware/application/apps/ui_sonde.cpp b/firmware/application/apps/ui_sonde.cpp
index f38fc3dd..5ddf157e 100644
--- a/firmware/application/apps/ui_sonde.cpp
+++ b/firmware/application/apps/ui_sonde.cpp
@@ -23,6 +23,7 @@
 #include "ui_sonde.hpp"
 #include "baseband_api.hpp"
 #include "audio.hpp"
+#include "app_settings.hpp"
 
 #include "portapack.hpp"
 #include <cstring>
@@ -43,6 +44,8 @@ namespace ui {
 
 
 SondeView::SondeView(NavigationView& nav) {
+	
+
 	baseband::run_image(portapack::spi_flash::image_tag_sonde);
 
 	add_children({
@@ -68,8 +71,17 @@ SondeView::SondeView(NavigationView& nav) {
 		&button_see_map
 	});
 
-	// start from the frequency currently stored in the receiver_model:
-	target_frequency_ = receiver_model.tuning_frequency();
+
+	// load app settings
+	auto rc = settings.load("rx_sonde", &app_settings);
+	if(rc == SETTINGS_OK) {
+		field_lna.set_value(app_settings.lna);
+		field_vga.set_value(app_settings.vga);
+		field_rf_amp.set_value(app_settings.rx_amp);
+		target_frequency_ = app_settings.rx_frequency;
+	}
+	else target_frequency_ = receiver_model.tuning_frequency();
+
 
 	field_frequency.set_value(target_frequency_);
 	field_frequency.set_step(500);		//euquiq: was 10000, but we are using this for fine-tunning
@@ -104,16 +116,6 @@ SondeView::SondeView(NavigationView& nav) {
     receiver_model.set_sampling_rate(sampling_rate);
     receiver_model.set_baseband_bandwidth(baseband_bandwidth);
     receiver_model.enable();   // Before using radio::enable(), but not updating Ant.DC-Bias.
-	
-	/* radio::enable({        // this can be removed, previous version, no DC-bias ant. control.
-		tuning_frequency(),
-		sampling_rate,
-		baseband_bandwidth,
-		rf::Direction::Receive,
-		receiver_model.rf_amp(),
-		static_cast<int8_t>(receiver_model.lna()),
-		static_cast<int8_t>(receiver_model.vga()),
-	}); */
 
 
         // QR code with geo URI
@@ -157,9 +159,13 @@ SondeView::SondeView(NavigationView& nav) {
 }
 
 SondeView::~SondeView() {
+	// save app settings
+	app_settings.rx_frequency = target_frequency_;
+	settings.save("rx_sonde", &app_settings);
+
 	baseband::set_pitch_rssi(0, false);
-/* 	radio::disable(); */  
-    receiver_model.disable();   // to switch off all, including DC bias.
+
+    	receiver_model.disable();   // to switch off all, including DC bias.
 	baseband::shutdown();
 	audio::output::stop();
 }
diff --git a/firmware/application/apps/ui_sonde.hpp b/firmware/application/apps/ui_sonde.hpp
index b1fab391..3129c72b 100644
--- a/firmware/application/apps/ui_sonde.hpp
+++ b/firmware/application/apps/ui_sonde.hpp
@@ -34,7 +34,7 @@
 #include "log_file.hpp"
 
 #include "sonde_packet.hpp"
-
+#include "app_settings.hpp"
 #include <cstddef>
 #include <string>
 
@@ -74,6 +74,9 @@ private:
 	bool beep { false };
 
 	char geo_uri[32]  = {};
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };	 
 
 	sonde::GPS_data gps_info { };
 	sonde::temp_humid temp_humid_info { };
diff --git a/firmware/application/apps/ui_sstvtx.cpp b/firmware/application/apps/ui_sstvtx.cpp
index 4943315d..55e882d2 100644
--- a/firmware/application/apps/ui_sstvtx.cpp
+++ b/firmware/application/apps/ui_sstvtx.cpp
@@ -88,6 +88,10 @@ void SSTVTXView::paint(Painter&) {
 }
 
 SSTVTXView::~SSTVTXView() {
+	// save app settings
+	app_settings.tx_frequency = transmitter_model.tuning_frequency();	
+	settings.save("tx_sstv", &app_settings);
+
 	transmitter_model.disable();
 	baseband::shutdown();
 }
@@ -215,6 +219,15 @@ SSTVTXView::SSTVTXView(
 	options_t mode_options;
 	uint32_t c;
 
+	// load app settings
+	auto rc = settings.load("tx_sstv", &app_settings);
+	if(rc == SETTINGS_OK) {
+		transmitter_model.set_rf_amp(app_settings.tx_amp);
+		transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
+		transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
+		transmitter_model.set_tx_gain(app_settings.tx_gain);		
+	}
+
 	// Search for valid bitmaps
 	file_list = scan_root_files(u"/sstv", u"*.bmp");
 	if (!file_list.size()) {
diff --git a/firmware/application/apps/ui_sstvtx.hpp b/firmware/application/apps/ui_sstvtx.hpp
index 8c320680..97f2cd68 100644
--- a/firmware/application/apps/ui_sstvtx.hpp
+++ b/firmware/application/apps/ui_sstvtx.hpp
@@ -34,6 +34,7 @@
 #include "sstv.hpp"
 #include "file.hpp"
 #include "bmp.hpp"
+#include "app_settings.hpp"
 
 using namespace sstv;
 
@@ -58,7 +59,10 @@ private:
 	NavigationView& nav_;
 	
 	sstv_scanline scanline_buffer { };
-	
+	// app save settings
+	std::app_settings 		settings { }; 		
+	std::app_settings::AppSettings 	app_settings { };	
+
 	bool file_error { false };
 	File bmp_file { };
 	bmp_header_t bmp_header { };
diff --git a/firmware/application/audio.cpp b/firmware/application/audio.cpp
index ce32076c..4ba23acc 100644
--- a/firmware/application/audio.cpp
+++ b/firmware/application/audio.cpp
@@ -168,8 +168,8 @@ void speaker_mute() {
 
 namespace input {
 
-void start(int8_t alc_mode) {
-	audio_codec->microphone_enable(alc_mode);   // added user-GUI selection for AK4951, ALC mode parameter.
+void start() {
+	audio_codec->microphone_enable();
 	i2s::i2s0::rx_start();
 }
 
diff --git a/firmware/application/audio.hpp b/firmware/application/audio.hpp
index 56301ee8..b02e42aa 100644
--- a/firmware/application/audio.hpp
+++ b/firmware/application/audio.hpp
@@ -49,7 +49,7 @@ public:
 	virtual volume_range_t headphone_gain_range() const = 0;
 	virtual void set_headphone_volume(const volume_t volume) = 0;
 
-	virtual void microphone_enable(int8_t alc_mode) = 0;	// added user-GUI  AK4951 ,selected ALC mode.
+	virtual void microphone_enable() = 0;
 	virtual void microphone_disable() = 0;
 
 	virtual size_t reg_count() const = 0;
@@ -59,7 +59,7 @@ public:
 
 namespace output {
 
-void start();		// this  other start(),no changed. ,in namespace output , used to config audio playback mode, 
+void start();
 void stop();
 
 void mute();
@@ -72,7 +72,7 @@ void speaker_unmute();
 
 namespace input {
 
-void start(int8_t alc_mode);  // added parameter user-GUI select AK4951-ALC mode for config mic path,(recording mode in datasheet),
+void start();
 void stop();
 
 } /* namespace input */
diff --git a/firmware/application/portapack.cpp b/firmware/application/portapack.cpp
index 0157cd4f..5d51f175 100644
--- a/firmware/application/portapack.cpp
+++ b/firmware/application/portapack.cpp
@@ -403,6 +403,7 @@ bool init() {
 	// if( !hackrf::cpld::load_sram() ) {
 	// 	chSysHalt();
 	// }
+	chThdSleepMilliseconds(100);
 
 	configure_pins_portapack();
 	
@@ -412,6 +413,8 @@ bool init() {
 
 	i2c0.stop();
 
+	chThdSleepMilliseconds(10);
+
 	set_clock_config(clock_config_irc);
 	cgu::pll1::disable();
 
@@ -452,9 +455,11 @@ bool init() {
 	cgu::pll1::direct();
 
 	i2c0.start(i2c_config_fast_clock);
+	chThdSleepMilliseconds(10);
 
 	touch::adc::init();
 	controls_init();
+	chThdSleepMilliseconds(10);
 
 	clock_manager.set_reference_ppb(persistent_memory::correction_ppb());
 	clock_manager.enable_first_if_clock();
@@ -465,10 +470,10 @@ bool init() {
 	sdcStart(&SDCD1, nullptr);
 	sd_card::poll_inserted();
 	
-	chThdSleepMilliseconds(1);
+	chThdSleepMilliseconds(10);
 
 	if( !portapack::cpld::update_if_necessary(portapack_cpld_config()) ) {
-		chThdSleepMilliseconds(1);
+		chThdSleepMilliseconds(10);
 		// If using a "2021/12 QFP100", press and hold the left button while booting. Should only need to do once.
 		if (load_config() != 3){
 			shutdown_base();
@@ -480,11 +485,13 @@ bool init() {
 		chSysHalt();
 	}
 
-	chThdSleepMilliseconds(1); // This delay seems to solve white noise audio issues
+	chThdSleepMilliseconds(10); // This delay seems to solve white noise audio issues
 
 	LPC_CREG->DMAMUX = portapack::gpdma_mux;
 	gpdma::controller.enable();
 
+	chThdSleepMilliseconds(10);
+
 	audio::init(portapack_audio_codec());
 	
 
diff --git a/firmware/application/ui_navigation.cpp b/firmware/application/ui_navigation.cpp
index d7e35633..65641d75 100644
--- a/firmware/application/ui_navigation.cpp
+++ b/firmware/application/ui_navigation.cpp
@@ -465,8 +465,11 @@ void NavigationView::focus() {
 /* ReceiversMenuView *****************************************************/
 
 ReceiversMenuView::ReceiversMenuView(NavigationView& nav) {
-	add_items({
-		//{ "..", 		ui::Color::light_grey(),&bitmap_icon_previous,	[&nav](){ nav.pop(); } },
+    if( portapack::persistent_memory::show_gui_return_icon() )
+    {
+        add_items( { { "..", ui::Color::light_grey(),&bitmap_icon_previous , [&nav](){ nav.pop(); } } } );
+    }
+    add_items( {
 		{ "ADS-B", 		ui::Color::green(),		&bitmap_icon_adsb,		[&nav](){ nav.push<ADSBRxView>(); }, },
 		//{ "ACARS", 		ui::Color::yellow(),	&bitmap_icon_adsb,		[&nav](){ nav.push<ACARSAppView>(); }, },
 		{ "AIS Boats",	ui::Color::green(),		&bitmap_icon_ais,		[&nav](){ nav.push<AISAppView>(); } },
@@ -486,16 +489,19 @@ ReceiversMenuView::ReceiversMenuView(NavigationView& nav) {
 		{ "LoRa", 		ui::Color::dark_grey(),	&bitmap_icon_lora,		[&nav](){ nav.push<NotImplementedView>(); } },
 		{ "SSTV", 		ui::Color::dark_grey(), &bitmap_icon_sstv,		[&nav](){ nav.push<NotImplementedView>(); } },
 		{ "TETRA", 		ui::Color::dark_grey(),	&bitmap_icon_tetra,		[&nav](){ nav.push<NotImplementedView>(); } },*/
-	});
-	
-	//set_highlighted(4);		// Default selection is "Audio"
+	} );
+
+	//set_highlighted(0);		// Default selection is "Audio"
 }
 
 /* TransmittersMenuView **************************************************/
 
 TransmittersMenuView::TransmittersMenuView(NavigationView& nav) {
-	add_items({
-		//{ "..",				ui::Color::light_grey(),&bitmap_icon_previous,	[&nav](){ nav.pop(); } },
+    if( portapack::persistent_memory::show_gui_return_icon() )
+    {
+        add_items( { { "..", ui::Color::light_grey(),&bitmap_icon_previous , [&nav](){ nav.pop(); } } } );
+    }
+    add_items({
 		{ "ADS-B [S]",		ui::Color::yellow(), 	&bitmap_icon_adsb,		[&nav](){ nav.push<ADSBTxView>(); } },
 		{ "APRS", 			ui::Color::green(),		&bitmap_icon_aprs,		[&nav](){ nav.push<APRSTXView>(); } },
 		{ "BHT Xy/EP", 		ui::Color::green(), 	&bitmap_icon_bht,		[&nav](){ nav.push<BHTView>(); } },
@@ -522,9 +528,12 @@ TransmittersMenuView::TransmittersMenuView(NavigationView& nav) {
 /* UtilitiesMenuView *****************************************************/
 
 UtilitiesMenuView::UtilitiesMenuView(NavigationView& nav) {
+    if( portapack::persistent_memory::show_gui_return_icon() )
+    {
+        add_items( { { "..", ui::Color::light_grey(),&bitmap_icon_previous , [&nav](){ nav.pop(); } } } );
+    }
 	add_items({
 		//{ "Test app", 		ui::Color::dark_grey(),	nullptr,				[&nav](){ nav.push<TestView>(); } },
-		//{ "..", 			ui::Color::light_grey(),&bitmap_icon_previous,		[&nav](){ nav.pop(); } },
 		{ "Freq. manager",	ui::Color::green(), 	&bitmap_icon_freqman,		[&nav](){ nav.push<FrequencyManagerView>(); } },
 		{ "File manager", 	ui::Color::yellow(),	&bitmap_icon_dir,			[&nav](){ nav.push<FileManagerView>(); } },
 		//{ "Notepad",		ui::Color::dark_grey(),	&bitmap_icon_notepad,		[&nav](){ nav.push<NotImplementedView>(); } },
@@ -532,7 +541,8 @@ UtilitiesMenuView::UtilitiesMenuView(NavigationView& nav) {
 		//{ "Tone search",	ui::Color::dark_grey(), nullptr,					[&nav](){ nav.push<ToneSearchView>(); } },
 		{ "Wav viewer",	ui::Color::yellow(),	&bitmap_icon_soundboard,	[&nav](){ nav.push<ViewWavView>(); } },
 		{ "Antenna length",	ui::Color::green(),		&bitmap_icon_tools_antenna,	[&nav](){ nav.push<WhipCalcView>(); } },
-		{ "Wipe SD Card",	ui::Color::red(),		&bitmap_icon_tools_wipesd,	[&nav](){ nav.push<WipeSDView>(); } },
+
+		{ "Wipe SD card",	ui::Color::red(),		&bitmap_icon_tools_wipesd,	[&nav](){ nav.push<WipeSDView>(); } },
 	});
 	set_max_rows(2); // allow wider buttons
 }
diff --git a/firmware/baseband/dsp_modulate.cpp b/firmware/baseband/dsp_modulate.cpp
index 31dd3f85..04102800 100644
--- a/firmware/baseband/dsp_modulate.cpp
+++ b/firmware/baseband/dsp_modulate.cpp
@@ -21,6 +21,8 @@
 
 #include "dsp_modulate.hpp"
 #include "sine_table_int8.hpp"
+#include "portapack_shared_memory.hpp"
+#include "tonesets.hpp"
 
 namespace dsp {
 namespace modulate {
@@ -40,13 +42,42 @@ void Modulator::set_over(uint32_t new_over) {
     over = new_over;
 }
 
+void Modulator::set_gain_vumeter_beep(float new_audio_gain , bool new_play_beep ) {
+      audio_gain = new_audio_gain ;    
+	  play_beep = new_play_beep; 
+
+}
+
+int32_t Modulator::apply_beep(int32_t sample_in, bool& configured_in, uint32_t& new_beep_index, uint32_t& new_beep_timer, TXProgressMessage& new_txprogress_message ) {
+
+	if (play_beep) {	   		// We need to add audio beep sample.
+			if (new_beep_timer) {
+				new_beep_timer--;
+			} else {
+				new_beep_timer = baseband_fs * 0.05;			// 50ms
+				
+				if (new_beep_index == BEEP_TONES_NB) {
+					configured_in = false;
+					shared_memory.application_queue.push(new_txprogress_message);
+				} else {
+					beep_gen.configure(beep_deltas[new_beep_index], 1.0); // config sequentially the audio beep tone.
+					new_beep_index++;
+				}
+			}
+		    sample_in = beep_gen.process(0);    // Get sample of the selected sequence of 6  beep tones , and overwrite audio sample. Mix 0%.
+		}
+	return sample_in;    // Return audio mic scaled with gain , 8 bit sample or audio beep sample.		
+}
+
+
 ///
 
 SSB::SSB() : hilbert() {
 	mode = Mode::LSB;
 }
 
-void SSB::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer) {
+void SSB::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer, bool& configured_in,  uint32_t& new_beep_index, uint32_t& new_beep_timer,TXProgressMessage& new_txprogress_message, AudioLevelReportMessage& new_level_message,  uint32_t& new_power_acc_count, uint32_t& new_divider ) {
+	// No way to activate correctly  the roger beep in this option, Maybe not enough M4 CPU power , Let's  block roger beep in SSB  selection by now . 
 	int32_t		sample = 0;
 	int8_t		re = 0, im = 0;
 	
@@ -55,7 +86,9 @@ void SSB::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer) {
 			float	i = 0.0, q = 0.0;
 
 		    sample = audio.p[counter / over] >> 2;
-			//switch (mode) {
+			sample *= audio_gain;      //  Apply GAIN  Scale factor to the audio TX modulation.
+	
+				//switch (mode) {
 				//case Mode::LSB:	
 			hilbert.execute(sample / 32768.0f, i, q);
 				//case Mode::USB:	hilbert.execute(sample / 32768.0f, q, i);
@@ -72,9 +105,23 @@ void SSB::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer) {
 			//re = q;
 			//im = i;
 			//break;
+				
 		}
 		
 		buffer.p[counter] = { re, im };
+		
+		// Update vu-meter bar in the LCD screen.
+	    	power_acc += (sample < 0) ? -sample : sample;	// Power average for UI vu-meter
+	
+			if (new_power_acc_count) {
+				new_power_acc_count--;
+			} else {				// power_acc_count = 0
+				new_power_acc_count = new_divider;
+				new_level_message.value = power_acc / (new_divider *8);	// Why ?  . This division is to adj vu-meter sentitivity, to match saturation point to red-muter .
+				shared_memory.application_queue.push(new_level_message);
+				power_acc = 0;
+			}	
+	
 	}
 }
 
@@ -88,15 +135,39 @@ void FM::set_fm_delta(uint32_t new_delta) {
 	fm_delta = new_delta;
 }
 
-void FM::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer) {
+void FM::set_tone_gen_configure(const uint32_t set_delta, const float set_tone_mix_weight) {
+	 tone_gen.configure(set_delta, set_tone_mix_weight);
+}	
+
+void FM::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer, bool& configured_in, uint32_t& new_beep_index, uint32_t& new_beep_timer, TXProgressMessage& new_txprogress_message, AudioLevelReportMessage& new_level_message, uint32_t& new_power_acc_count, uint32_t& new_divider  ) {
 	int32_t		sample = 0;
 	int8_t		re, im;
 
 	for (size_t counter = 0; counter < buffer.count; counter++) {
-		if (counter % over == 0) {
-		    sample = audio.p[counter / over] >> 8;
-		    delta = sample * fm_delta;
-		}
+	 
+	    sample = audio.p[counter>>6] >> 8;			// 	sample = audio.p[counter / over] >> 8;   (not enough efficient running code, over = 1536000/240000= 64 )
+		sample *= audio_gain;      					// Apply GAIN  Scale factor to the audio TX modulation.
+
+		if (play_beep) {
+			sample = apply_beep(sample, configured_in, new_beep_index, new_beep_timer, new_txprogress_message ); 	// Apply beep -if selected - atom ,sample by sample.
+		} else {
+			// Update vu-meter bar in the LCD screen.
+	    	power_acc += (sample < 0) ? -sample : sample;	// Power average for UI vu-meter
+	
+			if (new_power_acc_count) {
+				new_power_acc_count--;
+			} else {				// power_acc_count = 0
+				new_power_acc_count = new_divider;
+				new_level_message.value = power_acc / (new_divider / 4);	// Why ?  . This division is to adj vu-meter sentitivity, to match saturation point to red-muter .
+				shared_memory.application_queue.push(new_level_message);
+				power_acc = 0;
+			}	
+			// TODO: pending to optimize CPU running code. 
+			// So far , we can not handle all 3 issues at the same time (vu-meter , CTCSS, beep).
+			sample = tone_gen.process(sample);			// Add selected Key_Tone or CTCSS subtone , atom function() , sample by sample.
+		}	
+  
+	    delta = sample * fm_delta;						// Modulate FM
 
 		phase += delta;
 		sphase = phase >> 24;
@@ -112,16 +183,33 @@ AM::AM() {
 	mode = Mode::AM;
 }
 
-void AM::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer) {
+void AM::execute(const buffer_s16_t& audio, const buffer_c8_t& buffer, bool& configured_in, uint32_t& new_beep_index, uint32_t& new_beep_timer, TXProgressMessage& new_txprogress_message, AudioLevelReportMessage& new_level_message, uint32_t& new_power_acc_count, uint32_t& new_divider ) {
 	int32_t         sample = 0;
 	int8_t          re = 0, im = 0;
-	float		q = 0.0;
+	float			q = 0.0;
 	
 	for (size_t counter = 0; counter < buffer.count; counter++) {
 		if (counter % 128 == 0) {
 			sample = audio.p[counter / over] >> 2;
+			sample *= audio_gain;      					 // Apply GAIN  Scale factor to the audio TX modulation.
 		}
 
+		if (play_beep) {
+			sample = apply_beep(sample, configured_in, new_beep_index, new_beep_timer, new_txprogress_message )<<5; 	// Apply beep -if selected - atom sample by sample.
+		} else {
+			// Update vu-meter bar in the LCD screen.
+	    	power_acc += (sample < 0) ? -sample : sample;	// Power average for UI vu-meter
+	
+			if (new_power_acc_count) {
+				new_power_acc_count--;
+			} else {				// power_acc_count = 0
+				new_power_acc_count = new_divider;
+				new_level_message.value = power_acc / (new_divider *8);	// Why ?orig / (new_divider / 4);	// Why ?
+				shared_memory.application_queue.push(new_level_message);
+				power_acc = 0;
+			}	
+		}	
+
 		q = sample / 32768.0f;
 		q *= 256.0f;										 // Original 64.0f,now x4 (+12 dB's BB_modulation in AM & DSB)	
 		switch (mode) {
diff --git a/firmware/baseband/dsp_modulate.hpp b/firmware/baseband/dsp_modulate.hpp
index fdc6e95f..de964a68 100644
--- a/firmware/baseband/dsp_modulate.hpp
+++ b/firmware/baseband/dsp_modulate.hpp
@@ -24,6 +24,8 @@
 
 #include "dsp_types.hpp"
 #include "dsp_hilbert.hpp"
+#include "tone_gen.hpp"
+#include "baseband_processor.hpp"
 
 namespace dsp {
 namespace modulate {
@@ -41,13 +43,28 @@ enum class Mode {
 
 class Modulator {
 public:
-	virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer) = 0;
+	virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer,bool& configured_in, uint32_t& new_beep_index, uint32_t& new_beep_timer, TXProgressMessage& new_txprogress_message, AudioLevelReportMessage& new_level_message, uint32_t& new_power_acc_count, uint32_t& new_divider   ) = 0;
 	virtual ~Modulator();
 
 	Mode get_mode();
 	void set_mode(Mode new_mode);
 
     void set_over(uint32_t new_over);
+	void set_gain_vumeter_beep(float new_audio_gain , bool new_play_beep );
+	int32_t apply_beep(int32_t sample_in, bool& configured_in, uint32_t& new_beep_index, uint32_t& new_beep_timer, TXProgressMessage& new_txprogress_message );
+	float audio_gain { };
+	bool play_beep { false };
+	uint32_t power_acc_count { 0 };		// this var it is initialized from Proc_mictx.cpp
+	uint32_t divider { };				// this var it is initialized from Proc_mictx.cpp
+    uint64_t power_acc { 0 };	// it is aux Accumulated sum (Absolute sample signal) , initialitzed to zero. 
+	AudioLevelReportMessage level_message { };	
+
+private: 
+	static constexpr size_t baseband_fs = 1536000U;
+	TXProgressMessage txprogress_message { };
+   	ToneGen  beep_gen { };
+	uint32_t beep_index { }, beep_timer { };
+
 
 protected:
     uint32_t    over = 1;
@@ -60,7 +77,7 @@ class SSB : public Modulator {
 public:
 	SSB();
 
-	virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer);
+	virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer, bool& configured_in, uint32_t& new_beep_index, uint32_t& new_beep_timer, TXProgressMessage& new_txprogress_message, AudioLevelReportMessage& new_level_message, uint32_t& new_power_acc_count, uint32_t& new_divider  );
 
 private:
 	dsp::HilbertTransform	hilbert;
@@ -72,8 +89,9 @@ class FM : public Modulator {
 public:
 	FM();
 
-	virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer);
+	virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer, bool& configured_in,  uint32_t& new_beep_index, uint32_t& new_beep_timer, TXProgressMessage& new_txprogress_message, AudioLevelReportMessage& new_level_message, uint32_t& new_power_acc_count, uint32_t& new_divider  ) ;
 	void set_fm_delta(uint32_t new_delta);
+	void set_tone_gen_configure(const uint32_t delta, const float tone_mix_weight); 
 
 ///
 
@@ -81,13 +99,16 @@ private:
 	uint32_t	fm_delta { 0 };
 	uint32_t	phase { 0 }, sphase { 0 };
 	int32_t		sample { 0 }, delta { };
+	ToneGen 	tone_gen { };
+	
+
 };
 
 class AM : public Modulator {
 public:
         AM();
 
-        virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer);
+        virtual void execute(const buffer_s16_t& audio, const buffer_c8_t& buffer, bool& configured_in, uint32_t& new_beep_index, uint32_t& new_beep_timer, TXProgressMessage& new_txprogress_message, AudioLevelReportMessage& new_level_message, uint32_t& new_power_acc_count, uint32_t& new_divider  );
 };
 
 } /* namespace modulate */
diff --git a/firmware/baseband/proc_mictx.cpp b/firmware/baseband/proc_mictx.cpp
index d5c0040c..6c9c9b97 100644
--- a/firmware/baseband/proc_mictx.cpp
+++ b/firmware/baseband/proc_mictx.cpp
@@ -35,8 +35,10 @@ void MicTXProcessor::execute(const buffer_c8_t& buffer){
 	if (!configured) return;
 	
 	audio_input.read_audio_buffer(audio_buffer);
-	modulator->execute(audio_buffer, buffer);
-
+	modulator->set_gain_vumeter_beep(audio_gain, play_beep ) ;	
+	modulator->execute(audio_buffer, buffer, configured, beep_index, beep_timer, txprogress_message, level_message, power_acc_count, divider );	// Now "Key Tones & CTCSS" baseband additon inside FM mod. dsp_modulate.cpp"
+    
+   /* Original fw 1.3.1  good reference, beep and vu-meter
 	for (size_t i = 0; i < buffer.count; i++) {
 		
 		if (!play_beep) {
@@ -67,13 +69,13 @@ void MicTXProcessor::execute(const buffer_c8_t& buffer){
 					beep_index++;
 				}
 			}
-			
-			sample = beep_gen.process(0);
-		}
-		
-		/*
+			sample = beep_gen.process(0);    // TODO : Pending how to move inside modulate.cpp
+		} 
+	 */ 	
+				
+       /* Original fw 1.3.1  good reference FM moulation version, including "key tones CTCSS"  fw 1.3.1 
 		sample = tone_gen.process(sample);
-		
+				
 		// FM
 		if (configured) {
 			delta = sample * fm_delta;
@@ -89,8 +91,8 @@ void MicTXProcessor::execute(const buffer_c8_t& buffer){
 		}
 		
 		buffer.p[i] = { re, im };
-		*/
-	}
+		
+	}  */
 }
 
 void MicTXProcessor::on_message(const Message* const msg) {
@@ -100,12 +102,16 @@ void MicTXProcessor::on_message(const Message* const msg) {
 	switch(msg->id) {
 		case Message::ID::AudioTXConfig:
 			if (fm_enabled) {
-				dsp::modulate::FM *fm = new dsp::modulate::FM();
-				
-				fm->set_fm_delta(config_message.deviation_hz * (0xFFFFFFUL / baseband_fs));
+				 dsp::modulate::FM *fm = new dsp::modulate::FM();
+
+				// Config fm_delta private var inside DSP modulate.cpp
+				 fm->set_fm_delta(config_message.deviation_hz * (0xFFFFFFUL / baseband_fs));
+
+				 // Config properly the private tone_gen function parameters inside DSP modulate.cpp  	
+				 fm->set_tone_gen_configure(config_message.tone_key_delta, config_message.tone_key_mix_weight);		
 				modulator = fm;
 			}
-			
+
 			if (usb_enabled) {
 				modulator = new dsp::modulate::SSB();
 				modulator->set_mode(dsp::modulate::Mode::USB);
@@ -124,7 +130,7 @@ void MicTXProcessor::on_message(const Message* const msg) {
 				modulator->set_mode(dsp::modulate::Mode::DSB);
 			}
 
-            modulator->set_over(baseband_fs / 24000);
+			modulator->set_over(baseband_fs / 24000); // Keep no change.
 			
 			am_enabled = config_message.am_enabled;
 			usb_enabled = config_message.usb_enabled;
@@ -137,8 +143,9 @@ void MicTXProcessor::on_message(const Message* const msg) {
 			audio_gain = config_message.audio_gain;
 			divider = config_message.divider;
 			power_acc_count = 0;
-			
-			tone_gen.configure(config_message.tone_key_delta, config_message.tone_key_mix_weight);
+
+			// now this config  moved, in the case Message::ID::AudioTXConfig , only FM case.
+			// tone_gen.configure(config_message.tone_key_delta, config_message.tone_key_mix_weight);	
 			
 			txprogress_message.done = true;
 
diff --git a/firmware/baseband/proc_mictx.hpp b/firmware/baseband/proc_mictx.hpp
index b26cae38..175e53c7 100644
--- a/firmware/baseband/proc_mictx.hpp
+++ b/firmware/baseband/proc_mictx.hpp
@@ -49,8 +49,8 @@ private:
 	};
 	
 	AudioInput audio_input { };
-	ToneGen tone_gen { };
-	ToneGen beep_gen { };
+	// ToneGen tone_gen { };   moved to  dsp_modulate.cpp
+	// ToneGen beep_gen { };   moved to  dsp_modulate.cpp	
 	dsp::modulate::Modulator *modulator = NULL ;
 
 	bool am_enabled { false };
diff --git a/firmware/baseband/spectrum_collector.cpp b/firmware/baseband/spectrum_collector.cpp
index bdc5c77f..134de527 100644
--- a/firmware/baseband/spectrum_collector.cpp
+++ b/firmware/baseband/spectrum_collector.cpp
@@ -103,27 +103,13 @@ void SpectrumCollector::post_message(const buffer_c16_t& data) {
 	}
 }
 
-/* 3 types of Windowing time domain shapes declaration , but only used Hamming  ,  shapes for  FFT  
-    GCC10 compile sintax error c/m  (1/2), 
-          The primary diff. between const and constexpr variables is that 
-          the initialization of a const var can be deferred until run time. 
-	      A constexpr var. must be initialized at compile time. ... 
-	      A var. can be declared with constexpr , when it has a literal type and is initialized.
-	 GCC compile sintax error c/m (2/2)
- 	      Static assert --> Tests a software assertion at compile time for debugging.
-		  we keep the same safety  compile protection , just changing slightly the sintax  checking that the size of the called array is power of 2.
-	      if the bool  "constant expression" is TRUE (normal case) , the declaration has no effect.
-		  if the bool  "constant expression" is FALSE (abnormal array size) , it is aborted the compile with a msg error. 
-		  	  */ 
-
-
-template<typename T> // Although currently we are not using that Windowing shape, we apply the same GCC10 compile error c/m 
+template<typename T>
 static typename T::value_type spectrum_window_none(const T& s, const size_t i) {
 static_assert(power_of_two(ARRAY_ELEMENTS(s)), "Array number of elements must be power of 2");   // c/m compile error GCC10 , OK for all GCC versions. 
 	return s[i];
 };
 
-template<typename T>   // Currently we are calling and using that Window shape.
+template<typename T>
 static typename T::value_type spectrum_window_hamming_3(const T& s, const size_t i) {
     static_assert(power_of_two(ARRAY_ELEMENTS(s)), "Array number of elements must be power of 2");   // c/m compile error GCC10 , OK for all GCC versions. 
 	const size_t mask = s.size() - 1;          // c/m compile error GCC10 , constexpr->const
@@ -131,7 +117,7 @@ static typename T::value_type spectrum_window_hamming_3(const T& s, const size_t
 	return s[i] * 0.54f + (s[(i-1) & mask] + s[(i+1) & mask]) * -0.23f;
 };
 
-template<typename T>   // Although currently we are not using that Windowing shape, we apply the same GCC10 compile error c/m  
+template<typename T>
 static typename T::value_type spectrum_window_blackman_3(const T& s, const size_t i) {
     static_assert(power_of_two(ARRAY_ELEMENTS(s)), "Array number of elements must be power of 2");   // c/m compile error GCC10 , OK for all GCC versions. 
     const size_t mask = s.size() - 1;          // c/m compile error GCC10 , constexpr->const
diff --git a/firmware/baseband/tone_gen.cpp b/firmware/baseband/tone_gen.cpp
index dd74579d..d015f94f 100644
--- a/firmware/baseband/tone_gen.cpp
+++ b/firmware/baseband/tone_gen.cpp
@@ -24,14 +24,20 @@
 #include "sine_table_int8.hpp"
 
 
+/*
 int32_t ToneGen::tone_sine() {
+	//  TODO :  Added for Sonde App. We keep it by now , but it needs to be reviewed in Sonde
+	//  Hoepfully we can manage without it , same as previous fw  1.3.1  
 	int32_t tone_sample = sine_table_i8[tone_phase_] * 0x1000000;
 	tone_phase_ += delta_;
 
 	return tone_sample;
 }
+*/ 
+
 
 int32_t ToneGen::tone_square() {
+	//  TODO :  Added for Sonde App. We keep it by now , but it needs to be reviewed in Sonde
 	int32_t tone_sample = 0;
 
 	if(tone_phase_  < (UINT32_MAX / 2)) {
@@ -46,33 +52,66 @@ int32_t ToneGen::tone_square() {
 	return tone_sample;
 }
 
+/*   
 void ToneGen::configure(const uint32_t delta, const float tone_mix_weight) {
+	//  Confirmed !  It is not working well in the fw 1.4.4  Mic App , CTCSS generation, (but added for Sonde App)
+	//  I Think it should be deleted or modified but not use it as it is in Mic App . 	
+
 	delta_ = (uint8_t) ((delta & 0xFF000000U) >> 24);
+	delta_ = delta;
 	tone_mix_weight_ = tone_mix_weight;
 	input_mix_weight_ = 1.0 - tone_mix_weight;
-
 	current_tone_type_ = sine;
 }
+*/ 
+
+
 
 void ToneGen::configure(const uint32_t freq, const float tone_mix_weight, const tone_type tone_type, const uint32_t sample_rate) {
+	//  TODO :  Added for Sonde App. We keep it by now to avoid compile errors, but it needs to be reviewed in Sonde
 	delta_ = (uint8_t) ((freq * sizeof(sine_table_i8)) / sample_rate);
 	tone_mix_weight_ = tone_mix_weight;
 	input_mix_weight_ = 1.0 - tone_mix_weight;
 	current_tone_type_ = tone_type;
+}  
+
+
+
+
+//  ----Original available core SW code from fw 1.3.1 ,  Working also well in Mic App CTCSS Gen from fw 1.4.0 onwards
+
+// Original direct-look-up synthesis algorithm with Fractional delta phase. It is OK
+// Delta  and Accumulator fase are stored in 32 bits (4 bytes), 1st top byte used as Modulo-256 Sine look-up table [index]
+// the lower 3 bytes (24 bits)  are used as a Fractional Detla and Accumulator phase, to have very finer Fstep control.
+
+void ToneGen::configure(const uint32_t delta, const float tone_mix_weight) {
+	delta_ = delta;
+	tone_mix_weight_ = tone_mix_weight;
+	input_mix_weight_ = 1.0 - tone_mix_weight;
 }
 
 int32_t ToneGen::process(const int32_t sample_in) {
 	if (!delta_)
 		return sample_in;
 	
-	int32_t tone_sample = 0;
-	
-	if(current_tone_type_ == sine) {
-		tone_sample = tone_sine();
-	}
-	else if(current_tone_type_ == square) {
-		tone_sample = tone_square();
-	}
+	int32_t tone_sample = sine_table_i8[(tone_phase_ & 0xFF000000U) >> 24];
+	tone_phase_ += delta_;
+	
+	return (sample_in * input_mix_weight_) + (tone_sample * tone_mix_weight_);
+}
+// -------------------------------------------------------------
+
+
+
+int32_t ToneGen::process_square(const int32_t sample_in) {
+	//  TODO :  Added for Sonde App. We keep it by now , but it needs to be reviewed in Sonde
+	if (!delta_)
+		return sample_in;
+	
+	int32_t tone_sample = 0;
+	
+		tone_sample = tone_square();
+	
 	
 	return (sample_in * input_mix_weight_) + (tone_sample * tone_mix_weight_);
 }
diff --git a/firmware/baseband/tone_gen.hpp b/firmware/baseband/tone_gen.hpp
index c1eee222..eca69e2f 100644
--- a/firmware/baseband/tone_gen.hpp
+++ b/firmware/baseband/tone_gen.hpp
@@ -28,7 +28,7 @@
 
 class ToneGen {
 public:
-	enum tone_type { sine, square };
+	enum tone_type { sine, square };    // TODO:  Added for Radio Sonde.cpp PR 376, 381 , we need to check if keep or not.
 
 	/*ToneGen(const size_t sample_rate
 	) : sample_rate_ { sample_rate }
@@ -38,6 +38,7 @@ public:
 	void configure(const uint32_t freq, const float tone_mix_weight, const tone_type tone_type, const uint32_t sample_rate);
 
 	int32_t process(const int32_t sample_in);
+	int32_t process_square(const int32_t sample_in);
 
 private:
 	tone_type current_tone_type_ { sine };
@@ -45,19 +46,23 @@ private:
 	float input_mix_weight_ { 1 };
 	float tone_mix_weight_ { 0 };
 
-	uint8_t delta_ { 0 };
-	uint8_t tone_phase_ { 0 };
+	uint32_t delta_ { 0 };
+	uint32_t tone_phase_ { 0 };
+
+//	uint8_t delta_ { 0 };		// TODO:  Added for Radio Sonde.cpp PR 376, 381 , we need to check if keep or not.
+//	uint8_t tone_phase_ { 0 };  // TODO:  Added for Radio Sonde.cpp PR 376, 381 , we need to check if keep or not.
 
 	/**
 	 * Generator function which selects every other sample from the reference sine waveform to the output sample:
 	 */
-	int32_t tone_sine();
+	int32_t tone_sine();// TODO:  Added for Radio Sonde.cpp PR 376, 381 , we need to check if keep or not.
 
 
 	/**
 	 * Generator function for square waves:
 	 */	
-	int32_t tone_square();
+	int32_t tone_square();		// TODO:  Added for Radio Sonde.cpp PR 376, 381 , we need to check if keep or not.
+
 };
 
 #endif /* __TONE_GEN_H__ */
diff --git a/firmware/common/ak4951.cpp b/firmware/common/ak4951.cpp
index 1f88a3d6..74301ecb 100644
--- a/firmware/common/ak4951.cpp
+++ b/firmware/common/ak4951.cpp
@@ -216,347 +216,90 @@ void AK4951::speaker_disable() {
 	set_speaker_power(false);
 }
 
-void AK4951::microphone_enable(int8_t alc_mode) {
-// alc_mode =0 = (OFF =same as original code = NOT using AK4951 Programmable digital filter block), 
-// alc_mode >1 (with  DIGITAL FILTER BLOCK , example :  1:(+12dB) , 2:(+9dB)", 3:(+6dB), ...) 
-
-// map.r.digital_mic.DMIC = 0;		// originally commented code 
-// update(Register::DigitalMic);	// originally commented code 
-
-uint_fast8_t mgain =0b0111;   			// Pre-amp mic (Original code,  =0b0111 (+21dB's=7x3dBs),(Max is NOT 0b1111!, it is 0b1010=+30dBs=10x3dBs) 
-
-map.r.signal_select_2.INL = 0b01;		// Lch input signal = LIN2 , our ext. MONO MIC is connected here LIN2 in Portapack.
-map.r.signal_select_2.INR = 0b01;		// Rch input signal = RIN2 , Not used ,not connected ,but no problem. 
-map.r.signal_select_2.MICL = 0;			// MPWR = 2.4V  (it has two possible settings , 2.4V or 2.0V) , (majority smarthphones around 2V , range 1V-5V)
-update(Register::SignalSelect2);
-
-// ------Common code part, =  original setting  conditions, it is fine for all user-GUI alc_modes: OFF , and ALC modes .*/
-map.r.digital_filter_select_1.HPFAD = 1;	// HPF1 ON (after ADC);page 40 datasheet, HPFAD bit controls the ON/OFF of the HPF1 (HPF ON is recommended).
-map.r.digital_filter_select_1.HPFC = 0b11;	// HPF Cut off frequency of high pass filter from 236.8 Hz @fs=48k  ("00":3.7Hz, "01":14,8Hz, "10":118,4Hz) 
-update(Register::DigitalFilterSelect1);
-
-// map.r.r_ch_mic_gain_setting.MGR = 0x80;	// Microphone sensitivity correction = 0dB.,  (not used by now , original code cond.)
-// update(Register::RchMicGainSetting);		// (those two lines , not activated, same as original)	
-
-// pre-load 4 byes LPF coefficicients (.lpf_coefficient_0,1,2,3), FSA 14..0, FSB 14..0 , (fcut initial 6kHz, fs 48Khz). 	
-// it will be default pre-loading coeff. for al  ALC modes,  LPF bit is activated down, for all ALC digital modes.
-map.r.lpf_coefficient_0.l = 0x5F;		// Pre-loading here LPF 6kHz, 1st Order from digital Block , Fc=6000 Hz,  fs = 48khz
-map.r.lpf_coefficient_1.h = 0x09;		// LPF bit is activated down, for all ALC digital modes.
-map.r.lpf_coefficient_2.l = 0xBF;		// Writting reg to AK4951,  with "update", following instructions.
-map.r.lpf_coefficient_3.h = 0x32;
-
-update(Register::LPFCoefficient0);	// Writing  pre-loaded  4 bytes LPF  CoefFiecients 14 bits (FSA13..0,  FSB13..0
-update(Register::LPFCoefficient1);	// In this case , LPF 6KHz , when we activate the LPF block.
-update(Register::LPFCoefficient2);
-update(Register::LPFCoefficient3);
-
-// Reset , setting OFF all 5 x Digital Equalizer filters 
-map.r.digital_filter_select_3.EQ1 = 0;	  // EQ1 Coeffic Setting , (0: Disable-default, audio data passes  EQ1 block by 0dB gain). When EQ1="1”, the settings of E1A15-0, E1B15-0 and E1C15-0 bits are enabled
-map.r.digital_filter_select_3.EQ2 = 0;	  // EQ2 Coeffic Setting , (0: Disable-default, audio data passes  EQ2 block by 0dB gain). When EQ2="1”, the settings of E2A15-0, E2B15-0 and E2C15-0 bits are enabled
-map.r.digital_filter_select_3.EQ3 = 0;    // EQ3 Coeffic Setting , (0: Disable-default, audio data passes  EQ3 block by 0dB gain). When EQ3="1”, the settings of E3A15-0, E3B15-0 and E3C15-0 bits are enabled
-map.r.digital_filter_select_3.EQ4 = 0;    // EQ4 Coeffic Setting , (0: Disable-default, audio data passes  EQ4 block by 0dB gain). When EQ4="1”, the settings of E4A15-0, E4B15-0 and E4C15-0 bits are enabled
-map.r.digital_filter_select_3.EQ5 = 0;    // EQ5 Coeffic Setting , (0: Disable-default, audio data passes  EQ5 block by 0dB gain). When EQ5="1”, the settings of E5A15-0, E5B15-0 and E5C15-0 bits are enabled
-update(Register::DigitalFilterSelect3);		// A,B,C EQ1 Coefficients are already pre-loaded in ak4951.hpp
-
-
-  if (alc_mode==0) { 		// Programmable Digital Filter OFF,  same as original condition., no Digital ALC, nor Wind Noise Filter, LPF , EQ 
-
-		map.r.digital_filter_select_2.LPF = 0;	  // LPF-Block, Coeffic Setting Enable (OFF-Default), When LPF bit is “0”, audio data passes the LPF block by 0dB gain. 
-		update(Register::DigitalFilterSelect2);
-
-	  	// Pre-loading AUDIO PATH with all DIGITAL BLOCK by pased, see, audio path block diagramm AK4951 datasheet + Table  Playback mode  -Recording mode. 
-		// Digital filter block PATH is BY PASSED (we can swith off DIG. BLOCK power , PMPFIL=0) .The Path in Recording Mode 2 & Playback Mode 2  (NO DIG FILTER BLOCK AT ALL, not for MIC recording, nor for Playback)
-		map.r.digital_filter_mode.ADCPF = 1;	// ADCPF bit swith ("0" Mic  after ADC Output connected (recording mode) to the DIGITAL FILTER  BLOCK. ("1" Playback mode)  
-		map.r.digital_filter_mode.PFSDO = 0;	// ADC bit switch ("0" : 1st order HPF) connectedto the  Output. By bass DIGITAL block .
-    	map.r.digital_filter_mode.PFDAC = 0b00;	// (Input selector for DAC (not used in MIC), SDTI= Audio Serial Data Input Pin)
-		update(Register::DigitalFilterMode);		// Writing the Audio Path :  NO DIGITAL BLOCK or DIG BLOCK FOR  MIC ,   Audio mode path : Playback mode /-Recording mode.
-
-		map.r.power_management_1.PMADL  = 1;	// ADC Lch = Lch input signal. Mic Amp Lch and ADC Lch Power Management
-		map.r.power_management_1.PMADR  = 1;	// ADC Rch = Rch input signal. Mic Amp Rch and ADC Rch Power Management
-		map.r.power_management_1.PMPFIL = 0;	// Pre-loading , Programmable Dig. filter OFF ,filter unused, routed around.(original value = 0 ) 
-		update(Register::PowerManagement1);		// Activating the Power management of the used blocks . (Mic ADC always + Dig Block filter , when used )
-
-		// 1059/fs, 22ms @ 48kHz
-		chThdSleepMilliseconds(22);
-
-  } else {    // ( alc_mode !=0) 
-
-	switch(alc_mode) { 	// Pre-loading register values depending on user-GUI selection (they will be sended below, with "update(Register_name::xxx )".
-	 
-		case 1: 	// ALC-> on, (+12dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
-			map.r.alc_mode_control_2.REF = 0xC0;    	// REF7-0 bits,max gain at ALC recovery operation,(FFH +36dBs , D0H +18dBs, A0H 0dBs, C0H=+12dBs) 
-			map.r.l_ch_input_volume_control.IV = 0xC0; 	// Left, Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-			map.r.r_ch_input_volume_control.IV = 0xC0; 	// Right Input Dig Vol Setting, same comment as above , The value of IVOL should be <= than REF’s
-
-			// Already Pre-loaded, "map.r.lpf_coefficient", 6Khz - LPF 1st Order from digital Block,Fc=6000Hz,fs = 48khz
-			// LPF bit is activated down, for all ALC digital modes.
-			break;
-
-		case 2: 	// ALC-> on, (+09dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
-			map.r.alc_mode_control_2.REF = 0xB8;    	// REF7-0 bits,max gain at ALC recoveryoperation,(FFH +36dBs , D0H +18dBs, A0H 0dBs, B8H= +9dBs) 
-			map.r.l_ch_input_volume_control.IV = 0xB8; 	// Left, Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-			map.r.r_ch_input_volume_control.IV = 0xB8; 	// Right Input Dig Vol Setting, same comment as above , The value of IVOL should be <= than REF’s
-
-			// Already Pre-loaded, "map.r.lpf_coefficient", 6Khz - LPF 1st Order from digital Block,Fc=6000Hz,fs = 48khz
-			// LPF bit is activated down, for all ALC digital modes.
-			break;
-
-	    case 3: 	// ALC-> on, (+06dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
-			map.r.alc_mode_control_2.REF = 0xB0;    	// 0xB8 , REF7-0 bits,max gain at ALC recoveryoperation,(FFH +36dBs , D0H +18dBs, A0H 0dBs, B0H= +6dBs) 
-			map.r.l_ch_input_volume_control.IV = 0xB0; 	// Left, Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-			map.r.r_ch_input_volume_control.IV = 0xB0; 	// Right Input Dig Vol Setting, same comment as above , Then value of IVOL should be <= than REF’s
-		
-			// Already Pre-loaded, "map.r.lpf_coefficient", 6Khz - LPF 1st Order from digital Block,Fc=6000Hz,fs = 48khz
-			// LPF bit is activated down, for all ALC digital modes.
-			break;
-
-	    case 4: 	// ALC-> on, (+03dB's) Auto Vol max + Wind Noise cancel + Pre-amp Mic (+21dB=original)
-					// + EQ boosting ~<2kHz (f0:1,1k, fb:1,7K, k=1,8)   && + LPF 3,5k 
-			map.r.alc_mode_control_2.REF = 0xA8;    	// 0xA8 , REF7-0 bits,max gain at ALC recoveryoperation,(FFH +36dBs , D0H +18dBs, A0H 0dBs, A8H= +3dBs) 
-			map.r.l_ch_input_volume_control.IV = 0xA8; 	// Left, Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-			map.r.r_ch_input_volume_control.IV = 0xA8; 	// Right Input Dig Vol Setting, same comment as above , Then value of IVOL should be <= than REF’s
-
-			//The EQn (n=1, 2, 3, 4 or 5) coefficient must be set when EQn bit = “0” or PMPFIL bit = “0”.
-			map.r.digital_filter_select_3.EQ1 = 1;	    // EQ1 Coeffic Setting , (0: Disable-default, audio data passes  EQ1 block by 0dB gain). When EQ1="1”, the settings of E1A15-0, E1B15-0 and E1C15-0 bits are enabled
-			update(Register::DigitalFilterSelect3);		// A,B,C EQ1 Coefficients are already pre-loaded in ak4951.hpp
-
-			map.r.lpf_coefficient_0.l = 0x0D;		// Pre-loading here LPF 3,5k  ,  1st Order from digital Block , Fc=3.500 Hz,  fs = 48khz
-		   	map.r.lpf_coefficient_1.h = 0x06;		// LPF bit is activated down, for all ALC digital modes.
-       		map.r.lpf_coefficient_2.l = 0x1A;		// Writting reg to AK4951 , down with update....
-	   		map.r.lpf_coefficient_3.h = 0x2C;
-   			// LPF bit is activated down, for all ALC digital modes.			
- 			break;
-
-	  	case 5: 	// ALC-> on, (+03dB's) Auto Vol max + Wind Noise cancel + Pre-amp Mic (+21dB=original)
-		  			// + EQ boosting ~<3kHz (f0~1k4,fb~2,4k,k=1,8)   && LPF 4kHz 
-			map.r.alc_mode_control_2.REF = 0xA8;    	// 0xA0 , REF7-0 bits,max gain at ALC recoveryoperation,(FFH +36dBs , D0H +18dBs, A0H 0dBs, A8H= +3dBs) 
-			map.r.l_ch_input_volume_control.IV = 0xA8; 	// Left, Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-			map.r.r_ch_input_volume_control.IV = 0xA8; 	// Right Input Dig Vol Setting, same comment as above , Then value of IVOL should be <= than REF’s
-		
-			map.r.digital_filter_select_3.EQ2 = 1;	  // EQ2 Coeffic Setting , (0: Disable-default, audio data passes  EQ2 block by 0dB gain). When EQ2="1”, the settings of E2A15-0, E2B15-0 and E2C15-0 bits are enabled
-			update(Register::DigitalFilterSelect3);
-
-			map.r.lpf_coefficient_0.l = 0xC3;		// Pre-loading here LPF 4k  ,  1st Order from digital Block , Fc=4000 Hz,  fs = 48khz
-	   		map.r.lpf_coefficient_1.h = 0x06;		// LPF bit is activated down, for all ALC digital modes.
-       		map.r.lpf_coefficient_2.l = 0x86;		// Writting reg to AK4951 , down with update....
-	   		map.r.lpf_coefficient_3.h = 0x2D;
-   			// LPF bit is activated down, for all ALC digital modes.
-			break;
-
-		 case 6: 	// ALC-> on, (+03dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
-			map.r.alc_mode_control_2.REF = 0xA8;    	// REF7-0 bits,max gain at ALC recoveryoperation,(FFH +36dBs , D0H +18dBs, A0H 0dBs, A0H= 0dBs) 
-			map.r.l_ch_input_volume_control.IV = 0xA8; 	// Left, Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-			map.r.r_ch_input_volume_control.IV = 0xA8; 	// Right Input Dig Vol Setting, same comment as above , Then value of IVOL should be <= than REF’s
-
-			// Already Pre-loaded, "map.r.lpf_coefficient", 6Khz - LPF 1st Order from digital Block,Fc=6000Hz,fs = 48khz
-			// LPF bit is activated down, for all ALC digital modes.
-			break;
-
-		 case 7: 	// ALC-> on, (+00dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
-			map.r.alc_mode_control_2.REF = 0xA0;    	// REF7-0 bits,max gain at ALC recoveryoperation,(FFH +36dBs , D0H +18dBs, A0H 0dBs, A0H= 0dBs) 
-			map.r.l_ch_input_volume_control.IV = 0xA0; 	// Left, Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-			map.r.r_ch_input_volume_control.IV = 0xA0; 	// Right Input Dig Vol Setting, same comment as above , Then value of IVOL should be <= than REF’s
-
-			// Already Pre-loaded, "map.r.lpf_coefficient", 6Khz - LPF 1st Order from digital Block,Fc=6000Hz,fs = 48khz
-			// LPF bit is activated down, for all ALC digital modes.
-			break;
-
-		case 8:		// ALC-> on, (-03dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
-			map.r.alc_mode_control_2.REF = 0x98;    	//REF7-0 bits,max gain at ALC recovery operation,(FFH +36dBs , D0H +18dBs, A0H 0dBs, 98H=-03dBs) 
-			map.r.l_ch_input_volume_control.IV = 0x98; 	// Left, Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-			map.r.r_ch_input_volume_control.IV = 0x98; 	// Right Input Dig Vol Setting, same comment as above , Then value of IVOL should be <= than REF’s
+void AK4951::microphone_enable() {
+// map.r.digital_mic.DMIC = 0;
+// update(Register::DigitalMic);
 	
-			// Already Pre-loaded, "map.r.lpf_coefficient", 6Khz - LPF 1st Order from digital Block,Fc=6000Hz,fs = 48khz
-			// LPF bit is activated down, for all ALC digital modes.
-			break;
+	const uint_fast8_t mgain = 0b0111;
+	map.r.signal_select_1.MGAIN20 = mgain & 7;
+	map.r.signal_select_1.PMMP = 1;
+	map.r.signal_select_1.MPSEL = 1;	// MPWR2 pin
+	map.r.signal_select_1.MGAIN3 = (mgain >> 3) & 1;
+	update(Register::SignalSelect1);
 
-		case 9: 	// ALC-> on, (-06dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz + Pre-amp Mic (+21dB=original)
-			map.r.alc_mode_control_2.REF = 0x90;    	// REF7-0 bits,max gain at ALC recovery operation,(FFH +36dBs , D0H +18dBs, A0H 0dBs, 90H=-06dBs) 
-			map.r.l_ch_input_volume_control.IV = 0x90; 	// Left, Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-			map.r.r_ch_input_volume_control.IV = 0x90; 	// Right Input Dig Vol Setting, same comment as above , Then value of IVOL should be <= than REF’s
+	map.r.signal_select_2.INL = 0b01;	// Lch input signal = LIN2
+	map.r.signal_select_2.INR = 0b01;	// Rch input signal = RIN2
+	map.r.signal_select_2.MICL = 0;		// MPWR = 2.4V
+	update(Register::SignalSelect2);
 
-			// Already Pre-loaded, "map.r.lpf_coefficient", 6Khz - LPF 1st Order from digital Block,Fc=6000Hz,fs = 48khz
-			// LPF bit is activated down, for all ALC digital modes.
-			break;
-
-		case 10: 	// ALC-> on, (-09dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz - Pre-amp MIC -3dB (18dB's) 
-			// Reduce also Pre-amp Mic -3dB's (+18dB's)		
-			mgain = 0b0110;		// Pre-amp mic Mic Gain Pre-amp (+18dB), Original=0b0111 (+21dB's =7x3dBs),
-	
-			map.r.alc_mode_control_2.REF = 0x88;    	// REF7-0 bits,max gain at ALC recovery operation,(FFH +36dBs , D0H +18dBs, A0H 0dBs, 88H=-09dBs) 
-			map.r.l_ch_input_volume_control.IV = 0x88; 	// Left, Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-			map.r.r_ch_input_volume_control.IV = 0x88; 	// Right Input Dig Vol Setting, same comment as above , Then value of IVOL should be <= than REF’s
- 	
-			// Already Pre-loaded, "map.r.lpf_coefficient", 6Khz - LPF 1st Order from digital Block,Fc=6000Hz,fs = 48khz
-			// LPF bit is activated down, for all ALC digital modes.
-			break;
-
-		case 11: // ALC-> on, (-12dB's) Auto Vol max + Wind Noise cancel + LPF 6kHz - Pre-amp MIC -6dB (15dB's) 	
-			// Reduce also Pre-amp Mic -6dB's (+15dB's)  	
-			mgain = 0b0101;		// Pre-amp mic Mic Gain Pre-amp (+15dB), (Original=0b0111 (+21dB's= 7x3dBs),
-
-			map.r.alc_mode_control_2.REF = 0x80;    	// REF7-0 bits,max gain at ALC recovery operation,(FFH +36dBs , D0H +18dBs, A0H 0dBs, 80H=-12dBs) 
-			map.r.l_ch_input_volume_control.IV = 0x80; 	// Left, Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-			map.r.r_ch_input_volume_control.IV = 0x80; 	// Right Input Dig Vol Setting, same comment as above , Then value of IVOL should be <= than REF’s
-
-			// Already Pre-loaded, "map.r.lpf_coefficient", 6Khz - LPF 1st Order from digital Block,Fc=6000Hz,fs = 48khz
-			// LPF bit is activated down, for all ALC digital modes.
-			break;
-	}
-
-	//-------------------------------DIGITAL  ALC  (Automatic Level Control ) --- --------
-	map.r.alc_mode_control_1.ALC = 0;  // LMTH2-0, WTM1-0, RGAIN2-0, REF7-0, RFST1-0, EQFC1-0, FRATT, FRN and ALCEQN bits (needs to be set up with  ALC disable = 0) 
-	update(Register::ALCModeControl1);
-
-	map.r.timer_select.FRN = 0;      	// (FRN= 0  Fast Recovery mode , enable ) 
-	map.r.timer_select.FRATT = 0;    	// Fast Recovery Ref. Volume Atten. Amount -0,00106dB's, timing 4/fs (default)
-	map.r.timer_select.ADRST = 0b00; 	// initial offset ADC cycles , 22ms @fs=48Khz.
+// map.r.r_ch_mic_gain_setting.MGR = 0x80;	// Microphone sensitivity correction = 0dB.
+// update(Register::RchMicGainSetting);
+/*
+	map.r.timer_select.FRN = ?;
+	map.r.timer_select.FRATT = ?;
+	map.r.timer_select.ADRST = 0b??;
 	update(Register::TimerSelect);
 
-	map.r.alc_timer_select.RFST = 0b00;   // RFST1-0: ALC Fast Recovery Speed Default: “00” (0.0032dB)
-	map.r.alc_timer_select.WTM = 0b00;    // ALC Recovery Operation Waiting Period 128/fs = 2,7 mseg (min=default)
-	map.r.alc_timer_select.EQFC = 0b10;   // Selecting default, fs 48Khz , ALCEQ: First order zero pole high pass filter fc2=100Hz, fc1=150Hz
-	map.r.alc_timer_select.IVTM = 0;      // IVTM bit set the vol transition time ,236/fs = 4,9msecs (min) (default was 19,7msegs.)
+	map.r.alc_timer_select. = ?;
 	update(Register::ALCTimerSelect);
-
-	map.r.alc_mode_control_1.LMTH10 = 0b11;  // ALC Limiter Detec Level/ Recovery Counter Reset; lower 2 bits (Ob111=-8,4dbs), (default 0b000=-2,5dBs)
-	map.r.alc_mode_control_1.RGAIN  = 0b000; // ALC Recovery Gain Step, max step , max speed. Default: “000” (0.00424dB)
-	map.r.alc_mode_control_1.ALC = 1;		 // ALC Enable .  (we are now, NOT in MANUAL volume mode, only becomes manual when (ALC=“0” while ADCPF=“1”. )
-	map.r.alc_mode_control_1.LMTH2 = 1;      // ALC Limiter Detection Level/ Recovery Counter Reset Level,Upper bit,default 0b000      
-	map.r.alc_mode_control_1.ALCEQN = 1;     // ALC EQ Off =1 not used by now,   0: ALC EQ On (default) 
+	map.r.alc_mode_control_1. = ?;
+	map.r.alc_mode_control_1.ALC = 1;
 	update(Register::ALCModeControl1);
 
-	//   map.r.alc_mode_control_2.REF = 0x??;   	// Pre-loaded in top part. Maximum gain at ALC recovery operation,.(FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs) 
+	map.r.alc_mode_control_2.REF = ?;
 	update(Register::ALCModeControl2);
-
-	//   map.r.l_ch_input_volume_control.IV = 0x??; // Pre-loaded in top part. Left, Input Digital Volume Setting,  (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs)
-    update(Register::LchInputVolumeControl);
-	
-	//   map.r.r_ch_input_volume_control.IV = 0x??; // Pre-loaded in top part. Right,Input Digital Volume Setting, (FFH +36dBs , D0H +18dBs, A0H 0dBs, 70H=-18dBs) 
-    update(Register::RchInputVolumeControl);
-	
-	
-	//---------------Switch ON, Digital Automatic Wind Noise Filter reduction  -------------------     
-	// Difficult to realise that Dynamic HPF Wind noise filter benefit, maybe because we have another fixed HPF 236.8 Hz .
-	// Anyway ,  we propose to  activate it , with default  setting conditions.
-	map.r.power_management_1.PMPFIL = 0;	// (*1) To programm SENC, STG , we need PMPFIL = 0 . (but this disconnect Digital block power supply.
-	update(Register::PowerManagement1);		//  Updated PMPFIL to 0 . (*1)
-
-	map.r.auto_hpf_control.STG = 0b00;		//  (00=LOW ATTENUATION Level), lets put 11 (HIGH ATTENUATION Level) (default 00)
-	map.r.auto_hpf_control.SENC = 0b011;	//  (000=LOW sensitivity detection)… 111((MAX sensitivity detection) (default 011)
-	map.r.auto_hpf_control.AHPF = 1;    	//  Autom. Wind noise filter ON  (AHPF bit=“1”).It atten. wind noise when detecting ,and adjusts the atten. level dynamically.
-	update(Register::AutoHPFControl);       
-
-	//  We are in Digital Block ON , (Wind Noise Filter+ALC+LPF+EQ),==>  needs at the end , PMPFIL=1 , Program. Dig.filter ON   
-	//  map.r.power_management_1.PMPFIL = 1;	// that instruction is at the end , we can skp pre-loading Programmable Dig. filter ON (*1)
-	//---------------------------------------------------------------------
- 	    
-	// Writing AUDIO PATH diagramm, Changing  Audio mode path : Playback mode1 /-Recording mode2. (Figure 37 AK4951 datasheet, Table 27. Recording Playback Mode)
-	// When changing those modes, PMPFIL bit must be “0”, it is OK (*1)
-	map.r.digital_filter_mode.ADCPF = 1;	// ADCPF bit swith ("0" Mic  after ADC Output connected (recording mode) to the DIGITAL FILTER  BLOCK. ("1" Playback mode)  
-	map.r.digital_filter_mode.PFSDO = 1;	// ADC (+ 1st order HPF) Output
-    map.r.digital_filter_mode.PFDAC = 0b00;	// (Input selector for DAC (not used in MIC), SDTI= Audio Serial Data Input Pin)
-	update(Register::DigitalFilterMode);	// Writing the Audio Path :  NO DIGITAL BLOCK or DIG BLOCK FOR  MIC ,   Audio mode path : Playback mode /-Recording mode.
-
-	// The EQn (n=1, 2, 3, 4 or 5) coefficient must be set when EQn bit = “0” or PMPFIL bit = “0”., but we are already (*1) 
-	// map.r.power_management_1.PMPFIL = 0;		// In the previous Wind Noise Filter , we already set up PPFIL = 0
-	// update(Register::PowerManagement1);		// Activating the Power management of the used blocks . (Mic ADC always + Dig Block filter , when used )
-
-	// ... Set EQ & LPF  coefficients ---------------------------------
-
-	// writting to the IC ak4951 reg. settings defined in Ak4951.hpp ,  the 30 bytes ,  EQ coefficient =  5 (EQ1,2,3,4,5) x 3 (A,B,C coefficients) x 2 bytes (16 bits)
-    update(Register::E1Coefficient0);	// we could pre-load here,ex ,"map.r.e1_coefficient_0.l = 0x50;" , EQ1 Coefficient A  : A7...A0, but already done in ak4951.hpp
-    update(Register::E1Coefficient1);	// we could pre-load here,ex ,"map.r.e1_coefficient_1.h = 0xFE;" , EQ1 Coefficient A  : A15..A8,  "   "
-    update(Register::E1Coefficient2);	// we could pre-load here,ex ,"map.r.e1_coefficient_2.l = 0x29;" , EQ1 Coefficient B  : B7...B0,  "   "   
-    update(Register::E1Coefficient3);	// we could pre-load here,ex ,"map.r.e1_coefficient_3.h = 0xC5;" , EQ1 Coefficient B  : B15..B8,  "   "
-    update(Register::E1Coefficient4);	// we could pre-load here,ex ,"map.r.e1_coefficient_4.l = 0xA0;" , EQ1 Coefficient C  : C7...C0,  "   "
-    update(Register::E1Coefficient5);	// we could pre-load here,ex ,"map.r.e1_coefficient_5.h = 0x1C;" , EQ1 Coefficient C  : C15..C8,  "   "
-		
-	update(Register::E2Coefficient0);	// writing  pre-loaded EQ2 coefficcients
-    update(Register::E2Coefficient1);	
-    update(Register::E2Coefficient2);
-    update(Register::E2Coefficient3);
-    update(Register::E2Coefficient4);
-    update(Register::E2Coefficient5);
-
-	// Already pre-loaded LPF coefficients to 6k, 3,5k or 4k  ,(LPF 6Khz all digital alc modes top , except when  3k5 , 4k) 
-	update(Register::LPFCoefficient0);	// Writing  pre-loaded  4 bytes  LPF  CoefFiecients 14 bits (FSA13..0,  FSB13..0
-	update(Register::LPFCoefficient1);
-	update(Register::LPFCoefficient2);
-	update(Register::LPFCoefficient3);
-
-    // Activating LPF block , (and re-configuring the rest of bits of the same register)
-	map.r.digital_filter_select_2.HPF = 0;    // HPF2-Block, Coeffic Setting Enable (OFF-Default), When HPF bit is “0”, audio data passes the HPF2 block by is 0dB gain. 
-	map.r.digital_filter_select_2.LPF = 1;	  // LPF-Block, Coeffic Setting Enable (OFF-Default), When LPF bit is “0”, audio data passes the LPF block by 0dB gain. 	
-	map.r.digital_filter_select_2.FIL3 = 0;	  // Stereo_Emphasis_Filter-Block,(OFF-Default)  Coefficient Setting Enable , OFF , Disable.	
-	map.r.digital_filter_select_2.EQ0 = 0;    // Gain Compensation-Block, (OFF-Default) Coeffic Setting Enable, When EQ0 bit = “0” audio data passes the EQ0 block by 0dB gain. 
-	map.r.digital_filter_select_2.GN = 0b00;  // Gain Setting of the Gain Compensation Block Default: “00”-Default (0dB)	
+*/
+// map.r.l_ch_input_volume_control.IV = 0xe1;
+// update(Register::LchInputVolumeControl);
+// map.r.r_ch_input_volume_control.IV = 0xe1;
+// update(Register::RchInputVolumeControl);
+/*
+	map.r.auto_hpf_control.STG = 0b00;
+	map.r.auto_hpf_control.SENC = 0b011;
+	map.r.auto_hpf_control.AHPF = 0;
+	update(Register::AutoHPFControl);
+*/
+	map.r.digital_filter_select_1.HPFAD = 1;	// HPF1 (after ADC) = on
+	map.r.digital_filter_select_1.HPFC = 0b11;	// 2336.8 Hz @ fs=48k
+	update(Register::DigitalFilterSelect1);
+/*
+	map.r.digital_filter_select_2.HPF = 0;
+	map.r.digital_filter_select_2.LPF = 0;
+	map.r.digital_filter_select_2.FIL3 = 0;
+	map.r.digital_filter_select_2.EQ0 = 0;
+	map.r.digital_filter_select_2.GN = 0b00;
 	update(Register::DigitalFilterSelect2);
 
-		// Acitivating digital block , power supply 
-	map.r.power_management_1.PMADL  = 1;	// ADC Lch = Lch input signal. Mic Amp Lch and ADC Lch Power Management
-	map.r.power_management_1.PMADR  = 1;	// ADC Rch = Rch input signal. Mic Amp Rch and ADC Rch Power Management
-	map.r.power_management_1.PMPFIL = 1;	// Pre-loaded in top part.  Orig value=0, Programmable Digital filter unused (not power up), routed around. 
-	update(Register::PowerManagement1);		// Activating the Power management of the used blocks . (Mic ADC always + Dig Block filter , when used )
+	map.r.digital_filter_select_3.EQ1 = 0;
+	map.r.digital_filter_select_3.EQ2 = 0;
+	map.r.digital_filter_select_3.EQ3 = 0;
+	map.r.digital_filter_select_3.EQ4 = 0;
+	map.r.digital_filter_select_3.EQ5 = 0;
+	update(Register::DigitalFilterSelect3);
+*/
+	map.r.digital_filter_mode.PFSDO = 0;	// ADC (+ 1st order HPF) Output
+	map.r.digital_filter_mode.ADCPF = 1;	// ADC Output (default)
+	update(Register::DigitalFilterMode);
+
+	// ... Set coefficients ...
+
+	map.r.power_management_1.PMADL = 1;		// ADC Lch = Lch input signal
+	map.r.power_management_1.PMADR = 1;		// ADC Rch = Rch input signal
+	map.r.power_management_1.PMPFIL = 0;	// Programmable filter unused, routed around.
+	update(Register::PowerManagement1);
 
 	// 1059/fs, 22ms @ 48kHz
 	chThdSleepMilliseconds(22);
-
-  } 
-
-  // Common  part  for all alc_mode , --------------------------
-  // const uint_fast8_t mgain = 0b0111;		// Already pre-loaded , in above switch case . 
-  map.r.signal_select_1.MGAIN20 = mgain & 7;  // writing 3 lower bits of mgain , (pre-amp mic gain).  
-  map.r.signal_select_1.PMMP = 1;				// Activating DC Mic Power supply through 2kohms res., similar majority  smartphones  headphone+mic jack, "plug-in-power"
-  map.r.signal_select_1.MPSEL = 1;			// MPWR2 pin ,selecting output voltage to  MPWR2 pin, that we are using in portapack ext. MIC)
-  map.r.signal_select_1.MGAIN3 = (mgain >> 3) & 1; // writing 4th upper bit of mgain  (pre-amp mic gain).
-  update(Register::SignalSelect1);
-	
 }
 
-
-
 void AK4951::microphone_disable() {
-	map.r.power_management_1.PMADL = 0;		// original code  , disable Power managem.Mic  ADC L
-	map.r.power_management_1.PMADR = 0;		// original code  , disable Power managem.Mic  ADC R
-	map.r.power_management_1.PMPFIL = 0;	// original code  , disable Power managem. all Programmable Dig. block  
+	map.r.power_management_1.PMADL = 0;
+	map.r.power_management_1.PMADR = 0;
+	map.r.power_management_1.PMPFIL = 0;
 	update(Register::PowerManagement1);
 
-	map.r.alc_mode_control_1.ALC = 0;		// original code  , Restore , disable ALC block.
+	map.r.alc_mode_control_1.ALC = 0;
 	update(Register::ALCModeControl1);
-
-	map.r.auto_hpf_control.AHPF = 0;    	//----------- new code addition , Restore disable Wind noise filter OFF (AHPF bit=“0”). 
-	update(Register::AutoHPFControl); 
-
-	//Restore original AUDIO PATH , condition,  (Digital filter block PATH is BY PASSED)  (we can also swith off DIG. BLOCK power , PMPFIL=0)
-	// The Path in Recording Mode 2 & Playback Mode 2 , (NO DIG FILTER BLOCK AT ALL, not for MIC recording, nor for Playback)
-	map.r.digital_filter_mode.ADCPF = 1;	// new code addition , ADCPF bit swith ("0" Mic  after ADC Output connected (recording mode) to the DIGITAL FILTER  BLOCK. ("1" Playback mode)  
-	map.r.digital_filter_mode.PFSDO = 0;	// new code addition , ADC bit switch ("0" : 1st order HPF) connectedto the  Output. By bass DIGITAL block .
-   	map.r.digital_filter_mode.PFDAC = 0b00;	// new code addition , (Input selector for DAC (not used in MIC), SDTI= Audio Serial Data Input Pin)
-	update(Register::DigitalFilterMode);	// Writing the Audio Path :  NO DIGITAL BLOCK or DIG BLOCK FOR  MIC ,   Audio mode path : Playback mode /-Recording mode.
-	
-	// Restore original condition , LPF , OFF . same as when not using DIGITAL Programmable block
-	map.r.digital_filter_select_2.LPF = 0;	  // LPF-Block, Coeffic Setting Enable (OFF-Default), When LPF bit is “0”, audio data passes the LPF block by 0dB gain. 
-	update(Register::DigitalFilterSelect2);
-
-	map.r.lpf_coefficient_0.l = 0x00;		// Pre-loading here LPF 6k  ,  1st Order from digital Block , Fc=6000 Hz,  fs = 48khz
-	map.r.lpf_coefficient_1.h = 0x00;		// LPF bit is activated down, for all ALC digital modes.
-	map.r.lpf_coefficient_2.l = 0x00;		// Writting reg to AK4951 , down with update....
-	map.r.lpf_coefficient_3.h = 0x00;
-
-	update(Register::LPFCoefficient0);		// Writing  pre-loaded  4 bytes  LPF  CoefFiecients 14 bits (FSA13..0,  FSB13..0
-	update(Register::LPFCoefficient1);
-	update(Register::LPFCoefficient2);
-	update(Register::LPFCoefficient3);
-
-	// Switch off all EQ 1,2,3,4,5
-	map.r.digital_filter_select_3.EQ1 = 0;	  // EQ1 Coeffic Setting , (0: Disable-default, audio data passes  EQ1 block by 0dB gain). When EQ1="1”, the settings of E1A15-0, E1B15-0 and E1C15-0 bits are enabled
-	map.r.digital_filter_select_3.EQ2 = 0;	  // EQ2 Coeffic Setting , (0: Disable-default, audio data passes  EQ2 block by 0dB gain). When EQ2="1”, the settings of E2A15-0, E2B15-0 and E2C15-0 bits are enabled
-	map.r.digital_filter_select_3.EQ3 = 0;    // EQ3 Coeffic Setting , (0: Disable-default, audio data passes  EQ3 block by 0dB gain). When EQ3="1”, the settings of E3A15-0, E3B15-0 and E3C15-0 bits are enabled
-	map.r.digital_filter_select_3.EQ4 = 0;    // EQ4 Coeffic Setting , (0: Disable-default, audio data passes  EQ4 block by 0dB gain). When EQ4="1”, the settings of E4A15-0, E4B15-0 and E4C15-0 bits are enabled
-	map.r.digital_filter_select_3.EQ5 = 0;    // EQ5 Coeffic Setting , (0: Disable-default, audio data passes  EQ5 block by 0dB gain). When EQ5="1”, the settings of E5A15-0, E5B15-0 and E5C15-0 bits are enabled
-	update(Register::DigitalFilterSelect3);
-
 }
 
 reg_t AK4951::read(const address_t reg_address) {
diff --git a/firmware/common/ak4951.hpp b/firmware/common/ak4951.hpp
index 3b1f9e1a..df168a09 100644
--- a/firmware/common/ak4951.hpp
+++ b/firmware/common/ak4951.hpp
@@ -773,41 +773,40 @@ constexpr RegisterMap default_after_reset { Register_Type {
 		.REV = 0b1100,
 	},
 	
-	// just pre-loading into memory, 30 bytes =  EQ 1,2,3,4,5  x A,B,C (2 x bytes) coefficients, but it will be written from ak4951.cpp 
-	.e1_coefficient_0 = { .l = 0xCA },		//EQ1 Coefficient A  : A7...A0,		BW : 300Hz - 1700Hz  (fo = 1150Hz , fb= 1700Hz) , k=1,8 peaking 
-	.e1_coefficient_1 = { .h = 0x05 },		//EQ1 Coefficient A  : A15..A8
-	.e1_coefficient_2 = { .l = 0xEB },		//EQ1 Coefficient B  : B7...B0
-	.e1_coefficient_3 = { .h = 0x38 },		//EQ1 Coefficient B  : B15...B8
-	.e1_coefficient_4 = { .l = 0x6F },		//EQ1 Coefficient C  : C7...C0
-	.e1_coefficient_5 = { .h = 0xE6 },		//EQ1 Coefficient C  : C15..C8
+	.e1_coefficient_0 = { .l = 0x00 },
+	.e1_coefficient_1 = { .h = 0x00 },
+	.e1_coefficient_2 = { .l = 0x00 },
+	.e1_coefficient_3 = { .h = 0x00 },
+	.e1_coefficient_4 = { .l = 0x00 },
+	.e1_coefficient_5 = { .h = 0x00 },
 	
-	.e2_coefficient_0 = { .l = 0x05 },		//EQ2 Coefficient A  : A7...A0,		BW : 250Hz - 2700Hz  (fo = 1475Hz , fb= 2450Hz) , k=1,8 peaking  
-	.e2_coefficient_1 = { .h = 0x08 },		//EQ2 Coefficient A  : A15..A8
-	.e2_coefficient_2 = { .l = 0x11 },		//EQ2 Coefficient B  : B7...B0
-	.e2_coefficient_3 = { .h = 0x36 },		//EQ2 Coefficient B  : B15...B8
-	.e2_coefficient_4 = { .l = 0xE9 },		//EQ2 Coefficient C  : C7...C0
-	.e2_coefficient_5 = { .h = 0xE8 },		//EQ2 Coefficient C  : C15..C8
+	.e2_coefficient_0 = { .l = 0x00 },
+	.e2_coefficient_1 = { .h = 0x00 },
+	.e2_coefficient_2 = { .l = 0x00 },
+	.e2_coefficient_3 = { .h = 0x00 },
+	.e2_coefficient_4 = { .l = 0x00 },
+	.e2_coefficient_5 = { .h = 0x00 },
 	
-	.e3_coefficient_0 = { .l = 0x00 },		//EQ3 Coefficient A  : A7...A0,		not used  currently 
-	.e3_coefficient_1 = { .h = 0x00 },		//EQ3 Coefficient A  : A15..A8
-	.e3_coefficient_2 = { .l = 0x00 },		//EQ3 Coefficient B  : B7...B0
-	.e3_coefficient_3 = { .h = 0x00 },		//EQ3 Coefficient B  : B15...B8
-	.e3_coefficient_4 = { .l = 0x00 },		//EQ3 Coefficient C  : C7...C0
-	.e3_coefficient_5 = { .h = 0x00 },		//EQ3 Coefficient C  : C15..C8
+	.e3_coefficient_0 = { .l = 0x00 },
+	.e3_coefficient_1 = { .h = 0x00 },
+	.e3_coefficient_2 = { .l = 0x00 },
+	.e3_coefficient_3 = { .h = 0x00 },
+	.e3_coefficient_4 = { .l = 0x00 },
+	.e3_coefficient_5 = { .h = 0x00 },
 	
-	.e4_coefficient_0 = { .l = 0x00 },		//EQ4 Coefficient A  : A7...A0,		not used  currently
-	.e4_coefficient_1 = { .h = 0x00 },		//EQ4 Coefficient A  : A15..A8
-	.e4_coefficient_2 = { .l = 0x00 },		//EQ4 Coefficient B  : B7...B0
-	.e4_coefficient_3 = { .h = 0x00 },		//EQ4 Coefficient B  : B15...B8
-	.e4_coefficient_4 = { .l = 0x00 },		//EQ4 Coefficient C  : C7...C0
-	.e4_coefficient_5 = { .h = 0x00 },		//EQ4 Coefficient C  : C15..C8
+	.e4_coefficient_0 = { .l = 0x00 },
+	.e4_coefficient_1 = { .h = 0x00 },
+	.e4_coefficient_2 = { .l = 0x00 },
+	.e4_coefficient_3 = { .h = 0x00 },
+	.e4_coefficient_4 = { .l = 0x00 },
+	.e4_coefficient_5 = { .h = 0x00 },
 
-	.e5_coefficient_0 = { .l = 0x00 },		//EQ5 Coefficient A  : A7...A0,		not used currently
-	.e5_coefficient_1 = { .h = 0x00 },		//EQ5 Coefficient A  : A15..A8
-	.e5_coefficient_2 = { .l = 0x00 },		//EQ5 Coefficient B  : B7...B0
-	.e5_coefficient_3 = { .h = 0x00 },		//EQ5 Coefficient B  : B15...B8
-	.e5_coefficient_4 = { .l = 0x00 },		//EQ5 Coefficient C  : C7...C0
-	.e5_coefficient_5 = { .h = 0x00 },		//EQ5 Coefficient C  : C15..C8
+	.e5_coefficient_0 = { .l = 0x00 },
+	.e5_coefficient_1 = { .h = 0x00 },
+	.e5_coefficient_2 = { .l = 0x00 },
+	.e5_coefficient_3 = { .h = 0x00 },
+	.e5_coefficient_4 = { .l = 0x00 },
+	.e5_coefficient_5 = { .h = 0x00 },
 } };
 
 class AK4951 : public audio::Codec  {
@@ -842,7 +841,7 @@ public:
 	void set_headphone_volume(const volume_t volume) override;
 	void headphone_mute();
 
-	void microphone_enable(int8_t alc_mode); 	// added user GUI parameter , to set up AK4951 ALC mode.
+	void microphone_enable();
 	void microphone_disable();
 
 	size_t reg_count() const override {
diff --git a/firmware/common/portapack_persistent_memory.cpp b/firmware/common/portapack_persistent_memory.cpp
index 1b577336..35e2ad71 100644
--- a/firmware/common/portapack_persistent_memory.cpp
+++ b/firmware/common/portapack_persistent_memory.cpp
@@ -200,44 +200,32 @@ void set_serial_format(const serial_format_t new_value) {
 	data->serial_format = new_value;
 }
 
-/* static constexpr uint32_t playdead_magic = 0x88d3bb57;
-
-uint32_t playing_dead() {
-	return data->playing_dead;
-}
-
-void set_playing_dead(const uint32_t new_value) {
-	if( data->playdead_magic != playdead_magic ) {
-		set_playdead_sequence(0x8D1);	// U D L R
-	}
-	data->playing_dead = new_value;
-}
-
-uint32_t playdead_sequence() {
-	if( data->playdead_magic != playdead_magic ) {
-		set_playdead_sequence(0x8D1);	// U D L R
-	}
-	return data->playdead_sequence;
-}
-
-void set_playdead_sequence(const uint32_t new_value) {
-	data->playdead_sequence = new_value;
-	data->playdead_magic = playdead_magic;
-} */
-
 // ui_config is an uint32_t var storing information bitwise
-// bits 0,1,2 store the backlight timer
-// bits 31, 30,29,28,27, 26, 25, 24 stores the different single bit configs depicted below
-// bits on position 4 to 19 (16 bits) store the clkout frequency
+// bits 0-2 store the backlight timer
+// bits 4-19 (16 bits) store the clkout frequency
+// bits 21-31 store the different single bit configs depicted below
+// bit 20 store the display state of the gui return icon, hidden (0) or shown (1)
 
-bool disable_touchscreen() { // Option to disable touch screen
-	return data->ui_config & (1 << 24);
+bool show_gui_return_icon(){ // add return icon in touchscreen menue
+return data->ui_config & (1 << 20);
+}
+
+bool load_app_settings() { // load (last saved) app settings on startup of app
+	return data->ui_config & (1 << 21);
+}
+
+bool save_app_settings() { // save app settings when closing app
+	return data->ui_config & (1 << 22);
 }
   
 bool show_bigger_qr_code() { // show bigger QR code
 	return data->ui_config & (1 << 23);
 }
 
+bool disable_touchscreen() { // Option to disable touch screen
+	return data->ui_config & (1 << 24);
+}
+
 bool hide_clock() { // clock hidden from main menu
 	return data->ui_config & (1 << 25);
 }
@@ -274,14 +262,26 @@ uint32_t config_backlight_timer() {
 	return timer_seconds[data->ui_config & 7]; //first three bits, 8 possible values
 }
 
-void set_disable_touchscreen(bool v) {
-	data->ui_config = (data->ui_config & ~(1 << 24)) | (v << 24);
+void set_gui_return_icon(bool v) {
+	data->ui_config = (data->ui_config & ~(1 << 20)) | (v << 20);
 }
-  
+
+void set_load_app_settings(bool v) {
+	data->ui_config = (data->ui_config & ~(1 << 21)) | (v << 21);
+}
+
+void set_save_app_settings(bool v) {
+	data->ui_config = (data->ui_config & ~(1 << 22)) | (v << 22);
+}
+
 void set_show_bigger_qr_code(bool v) {
 	data->ui_config = (data->ui_config & ~(1 << 23)) | (v << 23);
 }
 
+void set_disable_touchscreen(bool v) {
+	data->ui_config = (data->ui_config & ~(1 << 24)) | (v << 24);
+}
+
 void set_clock_hidden(bool v) {
 	data->ui_config = (data->ui_config & ~(1 << 25)) | (v << 25);
 }
diff --git a/firmware/common/portapack_persistent_memory.hpp b/firmware/common/portapack_persistent_memory.hpp
index bdfc1fef..03d5cc91 100644
--- a/firmware/common/portapack_persistent_memory.hpp
+++ b/firmware/common/portapack_persistent_memory.hpp
@@ -78,6 +78,9 @@ uint8_t config_cpld();
 void set_config_cpld(uint8_t i);
 
 bool config_splash();
+bool show_gui_return_icon();
+bool load_app_settings();
+bool save_app_settings();
 bool show_bigger_qr_code();
 bool hide_clock();
 bool clock_with_date();
@@ -86,8 +89,11 @@ bool config_speaker();
 uint32_t config_backlight_timer();
 bool disable_touchscreen();
 
-void set_config_splash(bool v);
+void set_gui_return_icon(bool v);
+void set_load_app_settings(bool v);
+void set_save_app_settings(bool v);
 void set_show_bigger_qr_code(bool v);
+void set_config_splash(bool v);
 void set_clock_hidden(bool v);
 void set_clock_with_date(bool v);
 void set_config_login(bool v);
diff --git a/firmware/common/wm8731.hpp b/firmware/common/wm8731.hpp
index ac164a04..a5c8908b 100644
--- a/firmware/common/wm8731.hpp
+++ b/firmware/common/wm8731.hpp
@@ -345,9 +345,8 @@ public:
  	void speaker_disable() {};
 
 
-	void microphone_enable(int8_t alc_mode) override {
-		(void)alc_mode; 		// to avoid "unused warning" when compiling. (@WM8731 we do not use that parameter) 
-		// TODO: Implement,
+	void microphone_enable() override {
+		// TODO: Implement
 	}
 
 	void microphone_disable() override {
diff --git a/firmware/tools/generate_world_map.bin.py b/firmware/tools/generate_world_map.bin.py
index ffb28659..38f575e2 100755
--- a/firmware/tools/generate_world_map.bin.py
+++ b/firmware/tools/generate_world_map.bin.py
@@ -36,7 +36,7 @@ outfile.write(struct.pack('H', im.size[1]))
 print("Generating: \t" + outfile.name + "\n from\t\t" + im.filename + "\n please wait...");
 
 for y in range (0, im.size[1]):
-	line = ''
+	line = b''
 	for x in range (0, im.size[0]):
 		# RRRRRGGGGGGBBBBB
 		pixel_lcd = (pix[x, y][0] >> 3) << 11
@@ -47,8 +47,8 @@ for y in range (0, im.size[1]):
 		# pixel_lcd = (pix[x, y][0] >> 5) << 5
 		# pixel_lcd |= (pix[x, y][1] >> 5) << 2
 		# pixel_lcd |= (pix[x, y][2] >> 6)
-		line += str(struct.pack('H', pixel_lcd))
-	outfile.write(line.encode('utf-8'))
+		line += struct.pack('H', pixel_lcd)
+	outfile.write(line)
 	print(str(y) + '/' + str(im.size[1]) + '\r', end="")
 
 print("Ready.");
diff --git a/flashing/driver/amd64/WdfCoInstaller01011.dll b/flashing/driver/amd64/WdfCoInstaller01011.dll
new file mode 100644
index 00000000..d49d2913
Binary files /dev/null and b/flashing/driver/amd64/WdfCoInstaller01011.dll differ
diff --git a/flashing/driver/amd64/winusbcoinstaller2.dll b/flashing/driver/amd64/winusbcoinstaller2.dll
new file mode 100644
index 00000000..30e55025
Binary files /dev/null and b/flashing/driver/amd64/winusbcoinstaller2.dll differ