diff --git a/firmware/application/CMakeLists.txt b/firmware/application/CMakeLists.txt
index 4b02659f..0cb80e31 100644
--- a/firmware/application/CMakeLists.txt
+++ b/firmware/application/CMakeLists.txt
@@ -35,7 +35,7 @@ set(USE_OPT "-Os -g --specs=nano.specs")
 set(USE_COPT "-std=gnu99")
 
 # C++ specific options here (added to USE_OPT).
-set(USE_CPPOPT "-std=c++11 -fno-rtti -fno-exceptions")
+set(USE_CPPOPT "-Wl,-Map,foo.map -std=c++11 -fno-rtti -fno-exceptions")
 
 # Enable this if you want the linker to remove unused code and data
 set(USE_LINK_GC yes)
@@ -145,37 +145,38 @@ set(CPPSRC
 	${COMMON}/ui_painter.cpp
 	${COMMON}/ui_focus.cpp
 	${COMMON}/msgpack.cpp
-	ui_navigation.cpp
-	ui_menu.cpp
-	ui_rssi.cpp
-	ui_channel.cpp
+	ui_about.cpp
+	ui_adsbtx.cpp
+	ui_afsksetup.cpp
+	ui_alphanum.cpp
 	ui_audio.cpp
-	ui_font_fixed_8x16.cpp
-	ui_setup.cpp
-	ui_touch_calibration.cpp
-	ui_debug.cpp
 	ui_baseband_stats_view.cpp
-	ui_sd_card_status_view.cpp
-	ui_sd_card_debug.cpp
+	ui_channel.cpp
+	ui_debug.cpp
+	ui_encoders.cpp
+	ui_font_fixed_8x16.cpp
+	ui_freqman.cpp
+	ui_handwrite.cpp
+	ui_jammer.cpp
+	ui_lcr.cpp
+	ui_menu.cpp
+	ui_navigation.cpp
+	ui_numbers.cpp
+	ui_nuoptix.cpp
+	ui_rds.cpp
 	ui_receiver.cpp
 	ui_record_view.cpp
-	ui_textentry.cpp
-	ui_alphanum.cpp
-	ui_spectrum.cpp
-	ui_about.cpp
-	ui_nuoptix.cpp
-	ui_adsbtx.cpp
-	ui_handwrite.cpp
-	ui_afsksetup.cpp
-	# ui_closecall.cpp
+	ui_rssi.cpp
+	ui_sd_card_status_view.cpp
+	ui_sd_card_debug.cpp
+	ui_setup.cpp
 	ui_soundboard.cpp
-	ui_rds.cpp
-	ui_lcr.cpp
+	ui_spectrum.cpp
+	ui_textentry.cpp
+	ui_touch_calibration.cpp
+	ui_whipcalc.cpp
 	ui_xylos.cpp
-	ui_numbers.cpp
-	ui_freqman.cpp
-	ui_encoders.cpp
-	ui_jammer.cpp
+	# ui_closecall.cpp
 	# ui_loadmodule.cpp
 	recent_entries.cpp
 	receiver_model.cpp
diff --git a/firmware/application/Makefile b/firmware/application/Makefile
index b4bb4d0c..069a2a24 100644
--- a/firmware/application/Makefile
+++ b/firmware/application/Makefile
@@ -4302,6 +4302,30 @@ ui_touch_calibration.cpp.s:
 	cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/ui_touch_calibration.cpp.s
 .PHONY : ui_touch_calibration.cpp.s
 
+ui_whipcalc.obj: ui_whipcalc.cpp.obj
+.PHONY : ui_whipcalc.obj
+
+# target to build an object file
+ui_whipcalc.cpp.obj:
+	cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/ui_whipcalc.cpp.obj
+.PHONY : ui_whipcalc.cpp.obj
+
+ui_whipcalc.i: ui_whipcalc.cpp.i
+.PHONY : ui_whipcalc.i
+
+# target to preprocess a source file
+ui_whipcalc.cpp.i:
+	cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/ui_whipcalc.cpp.i
+.PHONY : ui_whipcalc.cpp.i
+
+ui_whipcalc.s: ui_whipcalc.cpp.s
+.PHONY : ui_whipcalc.s
+
+# target to generate assembly for a file
+ui_whipcalc.cpp.s:
+	cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/ui_whipcalc.cpp.s
+.PHONY : ui_whipcalc.cpp.s
+
 ui_xylos.obj: ui_xylos.cpp.obj
 .PHONY : ui_xylos.obj
 
@@ -4858,6 +4882,9 @@ help:
 	@echo "... ui_touch_calibration.obj"
 	@echo "... ui_touch_calibration.i"
 	@echo "... ui_touch_calibration.s"
+	@echo "... ui_whipcalc.obj"
+	@echo "... ui_whipcalc.i"
+	@echo "... ui_whipcalc.s"
 	@echo "... ui_xylos.obj"
 	@echo "... ui_xylos.i"
 	@echo "... ui_xylos.s"
diff --git a/firmware/application/main.cpp b/firmware/application/main.cpp
index cedaed35..aca5c944 100755
--- a/firmware/application/main.cpp
+++ b/firmware/application/main.cpp
@@ -23,14 +23,15 @@
 // Bitmaps generated with:
 // Gimp image > indexed colors (16), then "xxd -i *.bmp"
 
+//TEST: Imperial in whipcalc
 //TEST: Numbers
 //TEST: Jammer
 //TEST: RDS
 
-//BUG: Unistroke text entry screen doesn't care about string max length parameter
+//BUG (fixed ?): Soundboard crashes on exit if no wav files on sd card
 //BUG (fixed ?): No audio in about when shown second time
+//BUG: Unistroke text entry screen doesn't care about string max length parameter
 //BUG: POCSAG RX sometimes misses the first codeword after SYNC
-//BUG: Soundboard crashes on exit if no wav files on sd card
 
 //TODO: Use ModalMessageView with yes/no for TX
 //TODO: Show address/data bit fields in OOK TX
diff --git a/firmware/application/ui_freqman.cpp b/firmware/application/ui_freqman.cpp
index 1665f242..c453ac23 100644
--- a/firmware/application/ui_freqman.cpp
+++ b/firmware/application/ui_freqman.cpp
@@ -33,9 +33,27 @@
 using namespace portapack;
 
 namespace ui {
+
+void FrequencySaveView::focus() {
+	button_exit.focus();
+}
+
+FrequencySaveView::FrequencySaveView(
+	NavigationView& nav,
+	const rf::Frequency value
+) {
+
+	add_children({ {
+		&button_exit
+	} });
 	
-void FreqManView::paint(Painter& painter) {
-	(void)painter;
+	button_exit.on_select = [this, &nav](Button&) {
+		nav.pop();
+	};
+}
+
+void FreqManView::focus() {
+	button_exit.focus();
 }
 
 FreqManView::FreqManView(
@@ -43,7 +61,7 @@ FreqManView::FreqManView(
 ) {
 
 	add_children({ {
-		&button_ok
+		&button_exit
 	} });
 
 	size_t n = 0;
@@ -61,7 +79,7 @@ FreqManView::FreqManView(
 		n++;
 	}
 	
-	button_ok.on_select = [this, &nav](Button&) {
+	button_exit.on_select = [this, &nav](Button&) {
 		nav.pop();
 	};
 
diff --git a/firmware/application/ui_freqman.hpp b/firmware/application/ui_freqman.hpp
index d22208d7..44f8419d 100644
--- a/firmware/application/ui_freqman.hpp
+++ b/firmware/application/ui_freqman.hpp
@@ -28,23 +28,37 @@
 
 namespace ui {
 
+class FrequencySaveView : public View {
+public:
+	FrequencySaveView(NavigationView& nav, const rf::Frequency value);
+	//~FrequencySaveView();
+	
+	void focus() override;
+
+	std::string title() const override { return "Save frequency"; };
+
+private:
+	Button button_exit {
+		{ 72, 264, 96, 32 },
+		"Exit"
+	};	
+};
+
 class FreqManView : public View {
 public:
 	FreqManView(NavigationView& nav);
 	//~FreqManView();
 	
-	std::string title() const override { return "Frequency list"; };
+	void focus() override;
 
-	void paint(Painter& painter) override;
-	//void on_show() override;
-	//void on_hide() override;
+	std::string title() const override { return "Freq. manager"; };
 
 private:
 	std::array<Text, 10> text_list;
 
-	Button button_ok {
+	Button button_exit {
 		{ 72, 264, 96, 32 },
-		"OK"
+		"Exit"
 	};
 };
 
diff --git a/firmware/application/ui_jammer.cpp b/firmware/application/ui_jammer.cpp
index c48451da..a10c4cc4 100644
--- a/firmware/application/ui_jammer.cpp
+++ b/firmware/application/ui_jammer.cpp
@@ -51,6 +51,7 @@ void JammerView::update_text(uint8_t id, rf::Frequency f) {
 	std::string bw;
 	uint8_t c;
 
+	/*
 	auto mhz = to_string_dec_int(f / 1000000, 3);
 	auto hz100 = to_string_dec_int((f / 100) % 10000, 4, '0');
 
@@ -63,7 +64,8 @@ void JammerView::update_text(uint8_t id, rf::Frequency f) {
 		strcat(finalstr, " ");
 
 	buttons_freq[id].set_text(finalstr);
-
+	*/
+	
 	for (c = 0; c < 3; c++) {
 		center = (frequency_range[c].min + frequency_range[c].max) / 2;
 		bw = to_string_dec_int(abs(frequency_range[c].max - frequency_range[c].min) / 1000, 5);
@@ -156,7 +158,7 @@ JammerView::JammerView(NavigationView& nav) {
 		button.on_select = button_freq_fn;
 		button.set_parent_rect({
 			static_cast<Coord>(13 * 8),
-			static_cast<Coord>((n * 52) + 91 + (17 * (n & 1))),
+			static_cast<Coord>(((n >> 1) * 52) + 90 + (18 * (n & 1))),
 			88, 18
 		});
 		button.id = n;
@@ -180,6 +182,8 @@ JammerView::JammerView(NavigationView& nav) {
 		checkbox_range1.set_value(range_presets[v][0].enabled);
 		checkbox_range2.set_value(range_presets[v][1].enabled);
 		checkbox_range3.set_value(range_presets[v][2].enabled);
+		
+		update_text(0, 0);
 	};
 	
 	options_preset.set_selected_index(8);		// Sigfox, because they deserve it
diff --git a/firmware/application/ui_jammer.hpp b/firmware/application/ui_jammer.hpp
index 0a4ea5cd..59eadeef 100644
--- a/firmware/application/ui_jammer.hpp
+++ b/firmware/application/ui_jammer.hpp
@@ -95,7 +95,7 @@ private:
 		{ false, 0, 0 }},
 		
 		// Sigfox
-		{{ true, 868000000, 868220000 },	// Center: 868.2MHz BW: 40kHz
+		{{ true, 868000000, 868200000 },	// Center: 868.2MHz BW: 40kHz
 		{ false, 0, 0 },
 		{ false, 0, 0 }},
 		
diff --git a/firmware/application/ui_navigation.cpp b/firmware/application/ui_navigation.cpp
index 0c00aadd..a7bb5b2a 100644
--- a/firmware/application/ui_navigation.cpp
+++ b/firmware/application/ui_navigation.cpp
@@ -36,28 +36,26 @@
 #include "ui_debug.hpp"
 
 #include "ui_numbers.hpp"
+#include "ui_whipcalc.hpp"
 //#include "ui_closecall.hpp"		// DEBUG
 #include "ui_freqman.hpp"
 #include "ui_nuoptix.hpp"
 #include "ui_soundboard.hpp"
-
 #include "ui_encoders.hpp"
-#include "ui_debug.hpp"
 #include "ui_rds.hpp"
 #include "ui_xylos.hpp"
 #include "ui_epar.hpp"
 #include "ui_lcr.hpp"
 #include "analog_audio_app.hpp"
-//#include "ui_audiotx.hpp"			// DEBUG
 #include "ui_adsbtx.hpp"
 #include "ui_jammer.hpp"
-
 #include "ais_app.hpp"
 #include "ert_app.hpp"
 #include "tpms_app.hpp"
 #include "pocsag_app.hpp"
 #include "capture_app.hpp"
 
+#include "ui_debug.hpp"
 #include "core_control.hpp"
 
 #include "file.hpp"
@@ -182,13 +180,38 @@ void NavigationView::pop() {
 	}
 }
 
+void NavigationView::pop_modal() {
+	if( view() == modal_view ) {
+		modal_view = nullptr;
+	}
+
+	// Pop modal view and underlying app view
+	if( view_stack.size() > 2 ) {
+		free_view();
+		view_stack.pop_back();
+		free_view();
+		view_stack.pop_back();
+
+		update_view();
+	}
+}
+
 void NavigationView::display_modal(
 	const std::string& title,
 	const std::string& message
+) {
+	display_modal(title, message, INFO, nullptr);
+}
+
+void NavigationView::display_modal(
+	const std::string& title,
+	const std::string& message,
+	const modal_t type,
+	const std::function<void(bool)> on_choice
 ) {
 	/* If a modal view is already visible, don't display another */
 	if( !modal_view ) {
-		modal_view = push<ModalMessageView>(title, message, false);
+		modal_view = push<ModalMessageView>(title, message, type, on_choice);
 	}
 }
 
@@ -272,6 +295,15 @@ TransmitterAudioMenuView::TransmitterAudioMenuView(NavigationView& nav) {
 	on_left = [&nav](){ nav.pop(); };
 }
 
+/* UtilitiesView *****************************************************************/
+
+UtilitiesView::UtilitiesView(NavigationView& nav) {
+	add_items<2>({ {
+		{ "Whip antenna calculator",	ui::Color::green(), [&nav](){ nav.push<WhipCalcView>(); } },
+		{ "Notepad",					ui::Color::grey(),	[&nav](){ nav.push<NotImplementedView>(); } },
+	} });
+	on_left = [&nav](){ nav.pop(); };
+}
 /* SystemMenuView ********************************************************/
 
 SystemMenuView::SystemMenuView(NavigationView& nav) {
@@ -284,9 +316,10 @@ SystemMenuView::SystemMenuView(NavigationView& nav) {
 		//{ "Close Call                RX",	ui::Color::cyan(),		[&nav](){ nav.push<CloseCallView>(); } },
 		{ "Jammer", 				ui::Color::orange(),  	[&nav](){ nav.push<JammerView>(); } },
 		{ "Frequency manager", 		ui::Color::white(),  	[&nav](){ nav.push<FreqManView>(); } },
+		{ "Utilities",				ui::Color::purple(),	[&nav](){ nav.push<UtilitiesView>(); } },
 		//{ "Analyze", 		ui::Color::white(),  	[&nav](){ nav.push<NotImplementedView>(); } },
 		{ "Setup", 					ui::Color::white(),    	[&nav](){ nav.push<SetupMenuView>(); } },
-		{ "Debug", 					ui::Color::white(),    	[&nav](){ nav.push<DebugMenuView>(); } },
+		//{ "Debug", 					ui::Color::white(),    	[&nav](){ nav.push<DebugMenuView>(); } },
 		{ "HackRF", 				ui::Color::white(),	   	[&nav](){ nav.push<HackRFFirmwareView>(); } },
 		{ "About", 					ui::Color::white(),    	[&nav](){ nav.push<AboutView>(); } }
 	} });
@@ -453,61 +486,66 @@ void NotImplementedView::focus() {
 }
 
 /* ModalMessageView ******************************************************/
-
 ModalMessageView::ModalMessageView(
 	NavigationView& nav,
 	const std::string& title,
 	const std::string& message,
-	bool yesno
+	const modal_t type,
+	const std::function<void(bool)> on_choice
 ) : title_ { title },
-	yesno_ { yesno }
+	type_ { type },
+	on_choice_ { on_choice }
 {
 
-	if (!yesno) {
-		button_done.on_select = [&nav](Button&){
-			nav.pop();
-		};
+	add_child(&text_message);
+
+	if (type == INFO) {
+		add_child(&button_ok);
 		
-		add_children({ {
-			&text_message,
-			&button_done
-		} });
-	} else {
-		button_yes.on_select = [this,&nav](Button&){
-			if (on_choice) on_choice(true);
+		button_ok.on_select = [&nav](Button&){
 			nav.pop();
 		};
-		button_no.on_select = [this,&nav](Button&){
-			if (on_choice) on_choice(false);
-			nav.pop();
-		};
-		
+	} else if (type == YESNO) {
 		add_children({ {
-			&text_message,
 			&button_yes,
 			&button_no
 		} });
+		
+		button_yes.on_select = [this, &nav](Button&){
+			if (on_choice_) on_choice_(true);
+			nav.pop();
+		};
+		button_no.on_select = [this, &nav](Button&){
+			if (on_choice_) on_choice_(false);
+			nav.pop();
+		};
+	} else {
+		add_child(&button_ok);
+		
+		button_ok.on_select = [this, &nav](Button&){
+			if (on_choice_) on_choice_(true);
+			nav.pop_modal();
+		};
 	}
-
-	text_message.set(message);
 	
 	const int text_message_width = message.size() * 8;
  	text_message.set_parent_rect({
- 		(240 - text_message_width) / 2, 7 * 16,
+ 		(240 - text_message_width) / 2, 8 * 16,
  		text_message_width, 16
  	});
+	text_message.set(message);
 }
 
 void ModalMessageView::paint(Painter& painter) {
 	(void)painter;
-	portapack::display.drawBMP({64, 64}, modal_warning_bmp, false);
+	portapack::display.drawBMP({96, 64}, modal_warning_bmp, false);
 }
 
 void ModalMessageView::focus() {
-	if (!yesno_) {
-		button_done.focus();
-	} else {
+	if (type_ == YESNO) {
 		button_yes.focus();
+	} else {
+		button_ok.focus();
 	}
 }
 
diff --git a/firmware/application/ui_navigation.hpp b/firmware/application/ui_navigation.hpp
index 181161c6..4a06bd40 100644
--- a/firmware/application/ui_navigation.hpp
+++ b/firmware/application/ui_navigation.hpp
@@ -40,6 +40,12 @@
 
 namespace ui {
 
+enum modal_t {
+	INFO = 0,
+	YESNO,
+	ABORT
+};
+
 class SystemStatusView : public View {
 public:
 	std::function<void(void)> on_back;
@@ -112,8 +118,10 @@ public:
 	void push(View* v);
 
 	void pop();
+	void pop_modal();
 
 	void display_modal(const std::string& title, const std::string& message);
+	void display_modal(const std::string& title, const std::string& message, const modal_t type, const std::function<void(bool)> on_choice);
 
 	void focus() override;
 
@@ -192,6 +200,12 @@ public:
 	std::string title() const override { return "Audio TX"; };
 };
 
+class UtilitiesView : public MenuView {
+public:
+	UtilitiesView(NavigationView& nav);
+	std::string title() const override { return "Utilities"; };	
+};
+
 class SystemMenuView : public MenuView {
 public:
 	SystemMenuView(NavigationView& nav);
@@ -279,23 +293,23 @@ public:
 		NavigationView& nav,
 		const std::string& title,
 		const std::string& message,
-		bool yesno
+		const modal_t type,
+		const std::function<void(bool)> on_choice
 	);
 	void paint(Painter& painter) override;
 
 	void focus() override;
 
-	std::string title() const override { return title_; };
-	
-	std::function<void(bool)> on_choice;
+	// std::string title() const override { return title_; };
 
 private:
 	const std::string title_;
-	const bool yesno_;
-
+	const modal_t type_;
+	const std::function<void(bool)> on_choice_;
+	
 	Text text_message { };
 
-	Button button_done {
+	Button button_ok {
 		{ 10 * 8, 13 * 16, 10 * 8, 24 },
 		"OK",
 	};
diff --git a/firmware/application/ui_numbers.cpp b/firmware/application/ui_numbers.cpp
index 5da6f5de..72e41be0 100644
--- a/firmware/application/ui_numbers.cpp
+++ b/firmware/application/ui_numbers.cpp
@@ -31,6 +31,8 @@
 #include <cstring>
 #include <stdio.h>
 
+// TODO: Total transmission time (all durations / 44100)
+
 using namespace portapack;
 using namespace hackrf::one;
 
@@ -38,6 +40,10 @@ namespace ui {
 
 void NumbersStationView::focus() {
 	button_exit.focus();
+
+	if (file_error) {
+		nav_.display_modal("No files", "Missing files in /numbers/", ABORT, nullptr);
+	}
 }
 
 NumbersStationView::~NumbersStationView() {
@@ -45,53 +51,85 @@ NumbersStationView::~NumbersStationView() {
 	baseband::shutdown();
 }
 
-void NumbersStationView::paint(Painter& painter) {
-	(void)painter;
-}
-
 void NumbersStationView::on_tuning_frequency_changed(rf::Frequency f) {
 	transmitter_model.set_tuning_frequency(f);
 }
 
 void NumbersStationView::prepare_audio() {
+	uint8_t code;
+	
 	if (cnt >= sample_duration) {
-		/*if (!check_loop.value()) {
-			transmitter_model.disable();
-			return;
-		} else {
-			file.seek(44);
-			cnt = 0;
-		}*/
+		if (segment == ANNOUNCE) {
+			if (!announce_loop) {
+				segment = MESSAGE;
+			} else {
+				auto error = file.open("/numbers/announce.wav");
+				if (error.is_valid()) return;
+				
+				sample_duration = sound_sizes[10];
+				
+				file.seek(44);		// Skip header
+				
+				announce_loop--;
+			}
+		}
 		
-		// DEBUG
-			file.seek(44);
-			cnt = 0;
+		if (segment == MESSAGE) {
+			if (id_test == 10)
+				transmitter_model.disable();
+			
+			code = symfield_code.value(id_test);
+			
+			if (code == 10) {
+				pause = 11025;		// p: 0.25s @ 44100Hz
+				memset(audio_buffer, 0, 1024);
+			} else if (code == 11) {
+				pause = 33075;		// P: 0.75s @ 44100Hz
+				memset(audio_buffer, 0, 1024);
+			} else {
+				auto error = file.open("/numbers/" + file_names[code] + ".wav");
+				if (error.is_valid()) return;
+				
+				sample_duration = sound_sizes[code];
+				
+				file.seek(44);		// Skip header
+			}
+			
+			id_test++;
+		}
 		
+		cnt = 0;
 	}
 	
-	file.read(audio_buffer, 1024);
-	
-	// Unsigned to signed, pretty stupid :/
-	for (size_t n = 0; n < 1024; n++)
-		audio_buffer[n] -= 0x80;
-	
-	cnt += 1024;
+	if (!pause) {
+		size_t bytes_read = file.read(audio_buffer, 1024).value();
+		
+		// Unsigned to signed, pretty stupid :/
+		for (size_t n = 0; n < bytes_read; n++)
+			audio_buffer[n] -= 0x80;
+		
+		cnt += 1024;
+	} else {
+		if (pause >= 1024) {
+			pause -= 1024;
+		} else {
+			cnt = sample_duration;
+			pause = 0;
+		}
+	}
 	
 	baseband::set_fifo_data(audio_buffer);
 }
 
-void NumbersStationView::play_sound(uint16_t id) {
+void NumbersStationView::start_tx() {
 	uint32_t divider;
 
-	if (sounds[id].size == 0) return;
-
-	auto error = file.open("/numbers/" + filenames[id] + ".wav");
-	if (error.is_valid()) return;
+	sample_duration = sound_sizes[0];
+	cnt = sample_duration;
 	
-	sample_duration = sounds[id].sample_duration;
-	
-	cnt = 0;
-	file.seek(44);	// Skip header
+	id_test = 0;
+	announce_loop = 2;
+	segment = ANNOUNCE;
 	
 	prepare_audio();
 	
@@ -116,21 +154,94 @@ void NumbersStationView::play_sound(uint16_t id) {
 	);
 }
 
+// TODO: Copied from soundboard, make globally available
+uint16_t NumbersStationView::fb_to_uint16(const std::string& fb) {
+	return (fb[1] << 8) + fb[0];
+}
+
+uint32_t NumbersStationView::fb_to_uint32(const std::string& fb) {
+	return (fb[3] << 24) + (fb[2] << 16) + (fb[1] << 8) + fb[0];
+}
+
 NumbersStationView::NumbersStationView(
 	NavigationView& nav
-) {
-	uint8_t m, d, dayofweek;
-	uint16_t y;
+) : nav_ (nav)
+{
+	uint8_t c;
+	uint8_t y, m, d, dayofweek;
+	size_t size;
+	
+	char file_buffer[32];
+	
+	c = 0;
+	for (auto& file_name : file_names) {
+		auto error = file.open("/numbers/" + file_name + ".wav");
+		if (!error.is_valid()) {
+			file.seek(22);
+			file.read(file_buffer, 2);
+			
+			// Is file mono ?
+			if (fb_to_uint16(file_buffer) == 1) {
+				file.seek(40);
+				file.read(file_buffer, 4);
+				size = fb_to_uint32(file_buffer);
+				if (!size) break;
+				sound_sizes[c] = size;
+				c++;
+			} else {
+				break;
+			}
+		} else {
+			break;
+		}
+	}
+	
+	if (c != 11) file_error = true;
 	
 	baseband::run_image(portapack::spi_flash::image_tag_audio_tx);
 	
 	add_children({ {
 		&text_title,
+		&field_frequency,
 		&number_bw,
+		&symfield_code,
+		&button_tx,
 		&button_exit
 	} });
 
-	number_bw.set_value(15);
+	number_bw.set_value(120);
+
+	field_frequency.set_value(transmitter_model.tuning_frequency());
+	field_frequency.set_step(50000);
+	field_frequency.on_change = [this](rf::Frequency f) {
+		this->on_tuning_frequency_changed(f);
+	};
+	field_frequency.on_edit = [this, &nav]() {
+		// TODO: Provide separate modal method/scheme?
+		auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.tuning_frequency());
+		new_view->on_changed = [this](rf::Frequency f) {
+			this->on_tuning_frequency_changed(f);
+			this->field_frequency.set_value(f);
+		};
+	};
+	
+	// DEBUG
+	symfield_code.set_value(0, 10);
+	symfield_code.set_value(1, 3);
+	symfield_code.set_value(2, 4);
+	symfield_code.set_value(3, 11);
+	symfield_code.set_value(4, 6);
+	symfield_code.set_value(5, 1);
+	symfield_code.set_value(6, 9);
+	symfield_code.set_value(7, 7);
+	symfield_code.set_value(8, 8);
+	symfield_code.set_value(9, 0);
+	transmitter_model.set_tuning_frequency(103300000);	// 103.3MHz
+
+	for (c = 0; c < 10; c++)
+		symfield_code.set_symbol_list(c, "0123456789pP");
+
+
 
 	rtc::RTC datetime;
 	rtcGetTime(&RTCD1, &datetime);
@@ -144,6 +255,10 @@ NumbersStationView::NumbersStationView(
 	
 	text_title.set(day_of_week[dayofweek]);
 
+	button_tx.on_select = [this, &nav](Button&){
+		this->start_tx();
+	};
+
 	button_exit.on_select = [&nav](Button&){
 		nav.pop();
 	};
diff --git a/firmware/application/ui_numbers.hpp b/firmware/application/ui_numbers.hpp
index 7c797632..a399da38 100644
--- a/firmware/application/ui_numbers.hpp
+++ b/firmware/application/ui_numbers.hpp
@@ -25,7 +25,7 @@
 
 #include "ui.hpp"
 #include "ui_widget.hpp"
-#include "ui_painter.hpp"
+#include "ui_receiver.hpp"
 #include "ui_navigation.hpp"
 #include "ui_font_fixed_8x16.hpp"
 #include "clock_manager.hpp"
@@ -41,44 +41,58 @@ public:
 	~NumbersStationView();
 
 	void focus() override;
-	void paint(Painter& painter) override;
-
+	
 	std::string title() const override { return "Numbers station"; };
 	
 private:
-	// Different from the one in ui_soundboard.hpp, simpler
-	struct sound {
-		uint32_t size = 0;
-		uint32_t sample_duration = 0;
+	// Sequencing state machine
+	enum segments {
+		ANNOUNCE = 0,
+		MESSAGE,
+		SIGNOFF
 	};
 	
-	sound sounds[11];
+	Style style_red {
+		.font = font::fixed_8x16,
+		.background = Color::red(),
+		.foreground = Color::black()
+	};
 	
-	const std::string filenames[11] = {
-		"zero",
-		"one",
-		"two",
-		"three",
-		"four",
-		"five",
-		"six",
-		"seven",
-		"eight",
-		"nine",
-		"anounce"
+	NavigationView& nav_;
+	
+	segments segment; 
+	bool file_error = false;
+	uint32_t sound_sizes[11];
+	
+	const std::vector<std::string> file_names = {
+		{ "0" },
+		{ "1" },
+		{ "2" },
+		{ "3" },
+		{ "4" },
+		{ "5" },
+		{ "6" },
+		{ "7" },
+		{ "8" },
+		{ "9" },
+		{ "announce" }
 	};
 
 	const uint8_t month_table[12] = { 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 };
-	const char * day_of_week[7] = { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" };
+	const char * day_of_week[7] = { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday" };
 	
 	File file;
+	uint8_t id_test, announce_loop;
 	uint32_t cnt;
 	uint32_t sample_duration;
 	int8_t audio_buffer[1024];
+	uint32_t pause = 0;
 	
 	void on_tuning_frequency_changed(rf::Frequency f);
 	void prepare_audio();
-	void play_sound(uint16_t id);
+	void start_tx();
+	uint16_t fb_to_uint16(const std::string& fb);
+	uint32_t fb_to_uint32(const std::string& fb);
 	
 	// Schedule: save on sd card
 	// For each day of the week, max 8 messages ?
@@ -95,14 +109,27 @@ private:
 		"Schedule:"
 	};
 	
+	FrequencyField field_frequency {
+		{ 1 * 8, 4 },
+	};
 	NumberField number_bw {
-		{ 11 * 8, 3 * 16 },
+		{ 12 * 8, 2 * 16 },
 		3,
 		{1, 150},
 		1,
 		' '
 	};
 	
+	SymField symfield_code {
+		{ 1*8, 3 * 16 },
+		10,
+		false
+	};
+	
+	Button button_tx {
+		{ 21 * 8, 13 * 16, 64, 32 },
+		"TX !"
+	};
 	Button button_exit {
 		{ 21 * 8, 16 * 16, 64, 32 },
 		"Exit"
diff --git a/firmware/application/ui_receiver.cpp b/firmware/application/ui_receiver.cpp
index 18a5c613..4e928fec 100644
--- a/firmware/application/ui_receiver.cpp
+++ b/firmware/application/ui_receiver.cpp
@@ -20,6 +20,7 @@
  */
 
 #include "ui_receiver.hpp"
+#include "ui_freqman.hpp"
 
 #include "portapack.hpp"
 using namespace portapack;
@@ -140,14 +141,22 @@ FrequencyKeypadView::FrequencyKeypadView(
 		button.on_select = button_fn;
 		button.set_parent_rect({
 			(n % 3) * button_w,
-			(n / 3) * button_h + button_h,
+			(n / 3) * button_h + 24,
 			button_w, button_h
 		});
 		button.set_text(label);
 		n++;
 	}
+	
+	add_children({ {
+		&button_save,
+		&button_close
+	} });
+	
+	button_save.on_select = [this, &nav](Button&) {
+		nav.push<FrequencySaveView>(this->value());
+	};
 
-	add_child(&button_close);
 	button_close.on_select = [this, &nav](Button&) {
 		if( on_changed ) {
 			on_changed(this->value());
diff --git a/firmware/application/ui_receiver.hpp b/firmware/application/ui_receiver.hpp
index 1d4cb6d3..280cc853 100644
--- a/firmware/application/ui_receiver.hpp
+++ b/firmware/application/ui_receiver.hpp
@@ -198,13 +198,17 @@ private:
 	static constexpr int text_digits = mhz_digits + 1 + submhz_digits;
 
 	Text text_value {
-		{ 0, 0, text_digits * button_w, button_h }
+		{ 0, 4, 240, 16 }
 	};
 
 	std::array<Button, 12> buttons;
 
+	Button button_save {
+		{ 0, button_h * 4 + button_h, button_w, button_h },
+		"Save"
+	};
 	Button button_close {
-		{ 0, button_h * 4 + button_h, button_w * 3, button_h },
+		{ button_w, button_h * 4 + button_h, button_w * 2, button_h },
 		"Done"
 	};
 
diff --git a/firmware/application/ui_soundboard.cpp b/firmware/application/ui_soundboard.cpp
index 59df3272..13fa4892 100644
--- a/firmware/application/ui_soundboard.cpp
+++ b/firmware/application/ui_soundboard.cpp
@@ -74,10 +74,11 @@ void SoundBoardView::prepare_audio() {
 	}
 	
 	pbar.set_value(cnt);
+
+	size_t bytes_read = file.read(audio_buffer, 1024).value();
 	
-	file.read(audio_buffer, 1024);
-	
-	for (size_t n = 0; n < 1024; n++)
+	// Unsigned to signed, pretty stupid :/
+	for (size_t n = 0; n < bytes_read; n++)
 		audio_buffer[n] -= 0x80;
 	
 	cnt += 1024;
@@ -87,6 +88,10 @@ void SoundBoardView::prepare_audio() {
 
 void SoundBoardView::focus() {
 	buttons[0].focus();
+
+	if (!max_sound) {
+		nav_.display_modal("No files", "No files in /wav/ directory", ABORT, nullptr);
+	}
 }
 
 void SoundBoardView::on_tuning_frequency_changed(rf::Frequency f) {
@@ -202,7 +207,7 @@ void SoundBoardView::on_ctcss_changed(uint32_t v) {
 
 SoundBoardView::SoundBoardView(
 	NavigationView& nav
-)
+) : nav_ (nav)
 {
 	std::vector<std::string> file_list;
 	std::string file_name;
@@ -256,11 +261,6 @@ SoundBoardView::SoundBoardView(
 		}
 	}
 	
-	if (!c) {
-		nav.display_modal("No files", "No files in /wav/ directory");
-		nav.pop();
-	}
-	
 	max_sound = c;
 	max_page = max_sound / 21;		// 21 buttons per page
 	
diff --git a/firmware/application/ui_soundboard.hpp b/firmware/application/ui_soundboard.hpp
index b544f27e..0df8e72b 100644
--- a/firmware/application/ui_soundboard.hpp
+++ b/firmware/application/ui_soundboard.hpp
@@ -44,6 +44,8 @@ public:
 	std::string title() const override { return "Soundboard"; };
 	
 private:
+	NavigationView& nav_;
+	
 	enum tx_modes {
 		NORMAL = 0,
 		RANDOM
diff --git a/firmware/application/ui_whipcalc.cpp b/firmware/application/ui_whipcalc.cpp
new file mode 100644
index 00000000..0116bcb3
--- /dev/null
+++ b/firmware/application/ui_whipcalc.cpp
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ *
+ * 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 "ui_whipcalc.hpp"
+
+#include "ch.h"
+#include "portapack.hpp"
+#include "event_m0.hpp"
+
+#include <cstring>
+
+using namespace portapack;
+
+namespace ui {
+
+void WhipCalcView::focus() {
+	field_frequency.focus();
+}
+
+void WhipCalcView::update_result() {
+	double length, divider;
+	
+	divider = ((double)options_type.selected_index_value() / 8.0);
+	
+	// Metric
+	length = (speed_of_light_mps / (double)field_frequency.value()) * divider;
+	
+	auto m = to_string_dec_int((int)length, 2);
+	auto cm = to_string_dec_int(int(length * 100.0) % 100, 2);
+	auto mm = to_string_dec_int(int(length * 1000.0) % 10, 1);
+	
+	text_result_metric.set(m + "m " + cm + "." + mm + "cm");
+
+	// ANT500 elements for crude adjustment
+	length /= 0.14;
+	if (int(length) <= 4) {
+		auto elements = to_string_dec_int((int)length, 1);
+		text_result_ant500.set(elements + " " + frac_str[((int(length * 10.0) % 10) + 1) / 3] + "elements");
+	} else {
+		text_result_ant500.set("-");
+	}
+
+	// Imperial
+	length = (speed_of_light_fps / (double)field_frequency.value()) * divider;
+	
+	auto feet = to_string_dec_int((int)length, 3);
+	auto inch = to_string_dec_int(int(length * 10.0) % 12, 2);
+	auto inch_c = to_string_dec_int(int(length * 100.0) % 10, 1);
+	
+	text_result_imperial.set(feet + "ft " + inch + "." + inch_c + "in");
+}
+
+WhipCalcView::WhipCalcView(
+	NavigationView& nav
+) {
+
+	add_children({ {
+		&text_frequency,
+		&field_frequency,
+		&text_type,
+		&options_type,
+		&text_result_metric,
+		&text_result_imperial,
+		&text_result_ant500,
+		&button_exit
+	} });
+	
+	options_type.on_change = [this](size_t, OptionsField::value_t) {
+		this->update_result();
+	};
+	options_type.set_selected_index(2);		// Quarter wave
+	
+	field_frequency.set_value(transmitter_model.tuning_frequency());
+	field_frequency.set_step(500000);		// 500kHz step
+	field_frequency.on_change = [this](rf::Frequency) {
+		this->update_result();
+	};
+	field_frequency.on_edit = [this, &nav]() {
+		// TODO: Provide separate modal method/scheme?
+		auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.tuning_frequency());
+		new_view->on_changed = [this](rf::Frequency f) {
+			this->update_result();
+			this->field_frequency.set_value(f);
+		};
+	};
+	
+	button_exit.on_select = [this, &nav](Button&) {
+		nav.pop();
+	};
+}
+
+}
diff --git a/firmware/application/ui_whipcalc.hpp b/firmware/application/ui_whipcalc.hpp
new file mode 100644
index 00000000..ae1053e5
--- /dev/null
+++ b/firmware/application/ui_whipcalc.hpp
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ *
+ * 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 __UI_WHIPCALC_H__
+#define __UI_WHIPCALC_H__
+
+#include "ui.hpp"
+#include "ui_widget.hpp"
+#include "ui_receiver.hpp"
+#include "ui_navigation.hpp"
+#include "string_format.hpp"
+
+namespace ui {
+
+class WhipCalcView : public View {
+public:
+	WhipCalcView(NavigationView& nav);
+	
+	void focus() override;
+	
+	std::string title() const override { return "Whip calculator"; };
+
+private:
+	const double speed_of_light_mps = 299792458.0;		// m/s
+	const double speed_of_light_fps = 983571087.90472;	// feet/s
+	
+	const std::string frac_str[4] = { "", "1/4 ", "1/2 ", "3/4 " };
+	
+	void update_result();
+	
+	Text text_frequency {
+		{ 2 * 8, 2 * 16, 10 * 16, 16 },
+		"Frequency:"
+	};
+	FrequencyField field_frequency {
+		{ 13 * 8, 2 * 16 },
+	};
+	
+	Text text_type {
+		{ 2 * 8, 3 * 16, 5 * 16, 16 },
+		"Type:"
+	};
+	OptionsField options_type {
+		{ 8 * 8, 3 * 16 },
+		12,
+		{
+			{ "Full wave", 8 },
+			{ "Half wave", 4 },
+			{ "Quarter wave", 2 },
+			{ "3/4 wave", 6 },
+			{ "1/8 wave", 1 },
+			{ "3/8 wave", 3 },
+			{ "5/8 wave", 5 },
+			{ "7/8 wave", 7 }
+		}
+	};
+	
+	Text text_result_metric {
+		{ 3 * 8, 5 * 16, 10 * 16, 16 },
+		"-"
+	};
+	Text text_result_imperial {
+		{ 2 * 8, 6 * 16, 10 * 16, 16 },
+		"-"
+	};
+	Text text_result_ant500 {
+		{ 2 * 8, 8 * 16, 14 * 16, 16 },
+		"-"
+	};
+	
+	Button button_exit {
+		{ 72, 264, 96, 32 },
+		"Exit"
+	};
+};
+
+} /* namespace ui */
+
+#endif/*__UI_WHIPCALC__*/
diff --git a/firmware/application/ui_xylos.hpp b/firmware/application/ui_xylos.hpp
index 5299b870..171ce85b 100644
--- a/firmware/application/ui_xylos.hpp
+++ b/firmware/application/ui_xylos.hpp
@@ -159,6 +159,12 @@ private:
 	
 	tx_modes tx_mode = IDLE;
 	
+	// 93.975
+	// 94.1625
+	// 94.3125
+	// 94.425
+	// 95.0625
+	// 95.925
 	const rf::Frequency xylos_freqs[7] = { 31325000, 31387500, 31437500, 31475000, 31687500, 31975000, 88000000 };
 	
 	char ccir_message[21];
diff --git a/firmware/common/spi_image.hpp b/firmware/common/spi_image.hpp
index 6d4a17d0..c5a29e05 100644
--- a/firmware/common/spi_image.hpp
+++ b/firmware/common/spi_image.hpp
@@ -110,12 +110,12 @@ constexpr region_t bootstrap {
 
 constexpr region_t images {
 	.offset = 0x10000,
-	.size = 0x40000,
+	.size = 0x70000,
 };
 
 constexpr region_t application {
 	.offset = 0x80000,
-	.size = 0x40000,
+	.size = 0x50000,
 };
 
 } /* namespace spi_flash */
diff --git a/firmware/portapack-h1-havoc.bin b/firmware/portapack-h1-havoc.bin
index 6311d0d9..466adb64 100644
Binary files a/firmware/portapack-h1-havoc.bin and b/firmware/portapack-h1-havoc.bin differ
diff --git a/sdcard/numbers/0.wav b/sdcard/numbers/0.wav
new file mode 100644
index 00000000..f905ab83
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diff --git a/sdcard/numbers/1.wav b/sdcard/numbers/1.wav
new file mode 100644
index 00000000..287cb760
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new file mode 100644
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new file mode 100644
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new file mode 100644
index 00000000..1e3583f8
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new file mode 100644
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new file mode 100644
index 00000000..43fe9eab
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new file mode 100644
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diff --git a/sdcard/numbers/8.wav b/sdcard/numbers/8.wav
new file mode 100644
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new file mode 100644
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diff --git a/sdcard/numbers/announce.wav b/sdcard/numbers/announce.wav
new file mode 100644
index 00000000..ad38d282
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diff --git a/sdcard/numbers/anounce.wav b/sdcard/numbers/anounce.wav
deleted file mode 100644
index 166d590a..00000000
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