diff --git a/firmware/application/CMakeLists.txt b/firmware/application/CMakeLists.txt
index a422aaaf..2def6164 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..38fc9d2a
--- /dev/null
+++ b/firmware/application/app_settings.cpp
@@ -0,0 +1,113 @@
+/*
+ * 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>
+
+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, 256);
+			
+			// Retrieve settings
+			auto position1 = strstr(file_content, "baseband_bandwidth=");
+			if (position1) {
+				position1 += 19;
+				settings->baseband_bandwidth=strtoll(position1, nullptr, 10);
+			}
+
+			auto position2 = strstr(file_content, "rx_frequency=");
+			if (position2)  {
+				position2 += 13;
+				settings->rx_frequency=strtoll(position2, nullptr, 10);
+			}
+
+			auto position3 = strstr(file_content, "lna=");
+			if (position3) {
+				position3 += 4;
+				settings->lna=strtoll(position3, nullptr, 10);
+			}
+
+			auto position4 = strstr(file_content, "rx_amp=");
+			if (position4) {
+				position4 += 7;
+				settings->rx_amp=strtoll(position4, nullptr, 10);
+			}
+
+			auto position5 = strstr(file_content, "sampling_rate=");
+			if (position5) {
+				position5 += 13;
+				settings->sampling_rate=strtoll(position5, nullptr, 10);
+			}
+
+
+			auto position6 = strstr(file_content, "vga=");
+			if (position6) {
+				position6 += 4;
+				settings->vga=strtoll(position6, nullptr, 10);
+			} 
+
+			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("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("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));
+
+			rc = SETTINGS_OK;
+		}
+		else rc = SETTINGS_UNABLE_TO_SAVE;
+	}
+	else rc = SETTINGS_DISABLED;
+	return(rc);
+}
+
+} /* namespace std */
diff --git a/firmware/application/app_settings.hpp b/firmware/application/app_settings.hpp
new file mode 100644
index 00000000..6205a596
--- /dev/null
+++ b/firmware/application/app_settings.hpp
@@ -0,0 +1,78 @@
+/*
+ * 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
+
+
+	// store settings that can't be set directly, but have to be stored in app	
+	struct AppSettings {
+		uint32_t 	baseband_bandwidth;
+		uint8_t 	lna;
+		uint8_t 	rx_amp;
+		uint32_t 	rx_frequency;
+		uint32_t 	sampling_rate;
+		uint8_t 	vga;
+	};
+
+	int load(std::string application, AppSettings* settings);
+	int save(std::string application, AppSettings* settings);
+
+
+private:
+
+
+	char 		file_content[257] = {};	
+	std::string 	file_path = "";
+	std::string 	folder = "SETTINGS";
+	int		rc = SETTINGS_OK;
+	File 		settings_file { };	
+
+
+}; // 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..9777847f 100644
--- a/firmware/application/apps/analog_audio_app.cpp
+++ b/firmware/application/apps/analog_audio_app.cpp
@@ -129,10 +129,20 @@ 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);
@@ -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();
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/pocsag_app.cpp b/firmware/application/apps/pocsag_app.cpp
index cb5cacfe..d5f28508 100644
--- a/firmware/application/apps/pocsag_app.cpp
+++ b/firmware/application/apps/pocsag_app.cpp
@@ -77,11 +77,20 @@ 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_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 +136,11 @@ 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/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..a9d61928 100644
--- a/firmware/application/apps/ui_adsb_rx.cpp
+++ b/firmware/application/apps/ui_adsb_rx.cpp
@@ -309,8 +309,11 @@ void ADSBRxView::focus() {
 }
 
 ADSBRxView::~ADSBRxView() {
-	receiver_model.set_tuning_frequency(prevFreq);
 
+	// save app settings
+	settings.save("rx_adsb", &app_settings);
+
+	receiver_model.set_tuning_frequency(prevFreq);
 	rtc_time::signal_tick_second -= signal_token_tick_second;
 	receiver_model.disable();
 	baseband::shutdown();
@@ -458,6 +461,21 @@ 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 +496,6 @@ 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_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_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_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_settings.cpp b/firmware/application/apps/ui_settings.cpp
index 5b3cc4d3..bb1792b5 100644
--- a/firmware/application/apps/ui_settings.cpp
+++ b/firmware/application/apps/ui_settings.cpp
@@ -257,12 +257,6 @@ 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())
@@ -296,6 +290,36 @@ 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 +368,18 @@ void SetQRCodeView::focus() {
 	button_save.focus();
 }
 
+// ---------------------------------------------------------
+// Settings main menu
+// ---------------------------------------------------------
 SettingsMenuView::SettingsMenuView(NavigationView& nav) {
 	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..562cf636 100644
--- a/firmware/application/apps/ui_settings.hpp
+++ b/firmware/application/apps/ui_settings.hpp
@@ -283,6 +283,39 @@ private:
 	};
 };
 
+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 },
+		"Save"
+	};
+	
+	Button button_cancel {
+		{ 16 * 8, 16 * 16, 12 * 8, 32 },
+		"Cancel",
+	};
+};
+
 class SetAudioView : public View {
 public:
 	SetAudioView(NavigationView& nav);
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/common/portapack_persistent_memory.cpp b/firmware/common/portapack_persistent_memory.cpp
index 1b577336..c7bd2bf9 100644
--- a/firmware/common/portapack_persistent_memory.cpp
+++ b/firmware/common/portapack_persistent_memory.cpp
@@ -200,44 +200,26 @@ 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
+bool load_app_settings() { // load (last saved) app settings on startup of app
+	return data->ui_config & (1 << 21);
+}
 
-bool disable_touchscreen() { // Option to disable touch screen
-	return data->ui_config & (1 << 24);
+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 +256,22 @@ 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_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..174fdbfe 100644
--- a/firmware/common/portapack_persistent_memory.hpp
+++ b/firmware/common/portapack_persistent_memory.hpp
@@ -78,6 +78,8 @@ uint8_t config_cpld();
 void set_config_cpld(uint8_t i);
 
 bool config_splash();
+bool load_app_settings();
+bool save_app_settings();
 bool show_bigger_qr_code();
 bool hide_clock();
 bool clock_with_date();
@@ -87,6 +89,8 @@ uint32_t config_backlight_timer();
 bool disable_touchscreen();
 
 void set_config_splash(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_clock_hidden(bool v);
 void set_clock_with_date(bool v);