diff --git a/firmware/application/adsb.cpp b/firmware/application/adsb.cpp
index d1e8ccabd..9f4f504d7 100644
--- a/firmware/application/adsb.cpp
+++ b/firmware/application/adsb.cpp
@@ -26,37 +26,38 @@
 
 namespace adsb {
 
-void make_frame_mode_s(uint8_t * adsb_frame, uint32_t ICAO_address) {
-	adsb_frame[0] = 0x8D;	// DF and CA
+void make_frame_mode_s(uint8_t * const adsb_frame, const uint32_t ICAO_address) {
+	adsb_frame[0] = (17 << 3) | 5;		// DF and CA
 	adsb_frame[1] = ICAO_address >> 16;
 	adsb_frame[2] = (ICAO_address >> 8) & 0xFF;
 	adsb_frame[3] = ICAO_address & 0xFF;
+	
+	memset(&adsb_frame[4], 0, 10);
 }
 
-void generate_frame_id(uint8_t * adsb_frame, uint32_t ICAO_address, char * callsign) {
-	uint8_t c, s;
-	char ch;
+void generate_frame_id(uint8_t * const adsb_frame, const uint32_t ICAO_address, char * const callsign) {
 	std::string callsign_formatted(8, '_');
 	uint64_t callsign_coded = 0;
+	uint32_t c, s;
+	char ch;
 	
 	make_frame_mode_s(adsb_frame, ICAO_address);
 	
-	adsb_frame[4] = 0x20;	// TC
+	adsb_frame[4] = 4 << 3;	// TC = 4: Aircraft ID
 		
-	// Translate and code callsign
+	// Translate and encode callsign
 	for (c = 0; c < 8; c++) {
 		ch = callsign[c];
-		for (s = 0; s < 64; s++) {
+		
+		for (s = 0; s < 64; s++)
 			if (ch == icao_id_lut[s]) break;
-		}
-		if (s < 64) {
-			ch = icao_id_lut[s];
-		} else {
-			ch = ' ';
+		
+		if (s >= 64) {
+			ch = ' ';		// Invalid character
 			s = 32;
 		}
 		callsign_coded |= ((uint64_t)s << ((7 - c) * 6));
-		callsign_formatted[c] = ch;
+		callsign[c] = ch;
 	}
 	
 	// Insert callsign in frame
@@ -66,7 +67,17 @@ void generate_frame_id(uint8_t * adsb_frame, uint32_t ICAO_address, char * calls
 	ADSB_generate_CRC(adsb_frame);
 }
 
-void generate_frame_pos(uint8_t * adsb_frame, uint32_t ICAO_address, uint32_t altitude, float latitude, float longitude) {
+void generate_frame_emergency(uint8_t * const adsb_frame, const uint32_t ICAO_address, const uint8_t code) {
+	make_frame_mode_s(adsb_frame, ICAO_address);
+	
+	adsb_frame[4] = (28 << 3) + 1;	// TC = 28 (Emergency), subtype = 1 (Emergency)
+	adsb_frame[5] = code << 5;
+	
+	ADSB_generate_CRC(adsb_frame);
+}
+
+void generate_frame_pos(uint8_t * const adsb_frame, const uint32_t ICAO_address, const uint32_t altitude,
+	const float latitude, const float longitude) {
 	uint8_t c, time_parity;
 	uint32_t altitude_coded;
 	uint32_t LAT, LON;
@@ -76,7 +87,7 @@ void generate_frame_pos(uint8_t * adsb_frame, uint32_t ICAO_address, uint32_t al
 	
 	make_frame_mode_s(adsb_frame, ICAO_address);
 	
-	adsb_frame[4] = 0x58;	// TC, SS and NICsb
+	adsb_frame[4] = 11 << 3;	// TC = 11: Airborne position
 	
 	altitude_coded = (altitude + 1000) / 25;		// Can be coded in 100ft steps also
 	
@@ -105,7 +116,7 @@ void generate_frame_pos(uint8_t * adsb_frame, uint32_t ICAO_address, uint32_t al
 	adsb_frame[6] = ((altitude_coded & 0x00F) << 4) | (LAT >> 15);		// Then 0, even/odd, and the 2 LAT-CPR MSBs
 }
 
-void ADSB_generate_CRC(uint8_t * in_frame) {
+void ADSB_generate_CRC(uint8_t * const in_frame) {
 	uint8_t adsb_crc[14];	// Temp buffer
 	uint8_t b, c, s, bitn;
 	const uint32_t crc_poly = 0x1205FFF;
@@ -126,10 +137,10 @@ void ADSB_generate_CRC(uint8_t * in_frame) {
 			}
 		}
 	}
+	
 	// Insert CRC in frame
-	for (c = 0; c < 3; c++)
-		in_frame[c + 11] = adsb_crc[c + 11];
-		
+	memcpy(&in_frame[11], &adsb_crc[11], 3);
+	
 }
 
 } /* namespace adsb */
diff --git a/firmware/application/adsb.hpp b/firmware/application/adsb.hpp
index b2f134d1b..c982e645d 100644
--- a/firmware/application/adsb.hpp
+++ b/firmware/application/adsb.hpp
@@ -30,12 +30,14 @@ namespace adsb {
 
 	const char icao_id_lut[65] = "#ABCDEFGHIJKLMNOPQRSTUVWXYZ##### ###############0123456789######";
 	
-	void make_frame_mode_s(uint8_t * adsb_frame, uint32_t ICAO_address);
+	void make_frame_mode_s(uint8_t * const adsb_frame, const uint32_t ICAO_address);
 	
-	void generate_frame_id(uint8_t * adsb_frame, uint32_t ICAO_address, char * callsign);
-	void generate_frame_pos(uint8_t * adsb_frame, uint32_t ICAO_address, uint32_t altitude, float latitude, float longitude);
+	void generate_frame_id(uint8_t * const adsb_frame, const uint32_t ICAO_address, char * const callsign);
+	void generate_frame_pos(uint8_t * const adsb_frame, const uint32_t ICAO_address, const uint32_t altitude,
+		const float latitude, const float longitude);
+	void generate_frame_emergency(uint8_t * const adsb_frame, const uint32_t ICAO_address, const uint8_t code);
 	
-	void ADSB_generate_CRC(uint8_t * in_message);
+	void ADSB_generate_CRC(uint8_t * const in_message);
 
 } /* namespace adsb */
 
diff --git a/firmware/application/baseband_api.cpp b/firmware/application/baseband_api.cpp
index a1f7149c2..0d2faf9f9 100644
--- a/firmware/application/baseband_api.cpp
+++ b/firmware/application/baseband_api.cpp
@@ -82,7 +82,7 @@ void WFMConfig::apply() const {
 void set_tones_data(const uint32_t bw, const uint32_t pre_silence, const uint16_t tone_count,
 					const bool dual_tone, const bool audio_out) {
 	const TonesConfigureMessage message {
-		(uint32_t)(262144 * bw) / 1536000,
+		bw,
 		pre_silence,
 		tone_count,
 		dual_tone,
diff --git a/firmware/application/main.cpp b/firmware/application/main.cpp
index 9f55f77f3..047b72441 100755
--- a/firmware/application/main.cpp
+++ b/firmware/application/main.cpp
@@ -25,7 +25,7 @@
 
 //BUG: Set description in frequency save makes everything go crazy
 //BUG: Distorted audio in WFM receiver
-//BUG: (fixed ?) Bad console scroll init
+//BUG: (fixed ?) POCSAG: Bad console scroll init
 //BUG: POCSAG misses alphanum messages, cuts them off sometimes
 //BUG: Check AFSK transmit end, skips last bits ?
 //BUG: RDS doesn't stop baseband when stopping tx ?
diff --git a/firmware/application/ui_adsbtx.cpp b/firmware/application/ui_adsbtx.cpp
index d5a54f6e2..3042025a1 100644
--- a/firmware/application/ui_adsbtx.cpp
+++ b/firmware/application/ui_adsbtx.cpp
@@ -38,7 +38,7 @@ using namespace portapack;
 namespace ui {
 
 void ADSBTxView::focus() {
-	button_transmit.focus();
+	sym_icao.focus();
 }
 
 ADSBTxView::~ADSBTxView() {
@@ -52,11 +52,8 @@ void ADSBTxView::paint(Painter& painter) {
 }
 
 void ADSBTxView::generate_frame() {
-	uint8_t c;
+	uint32_t c;
 	std::string str_debug;
-
-	if (options_format.selected_index() == 2)
-		button_transmit.hidden(true);
 	
 	generate_frame_id(adsb_frame, sym_icao.value_hex_u64(), callsign);
 
@@ -64,9 +61,8 @@ void ADSBTxView::generate_frame() {
 
 	// Convert to binary (1 bit per byte, faster for baseband code)
 	for (c = 0; c < 112; c++) {
-		if ((adsb_frame[c >> 3] << (c & 7)) & 0x80) {
+		if ((adsb_frame[c >> 3] << (c & 7)) & 0x80)
 			adsb_bin[c] = 0xFF;
-		}
 	}
 	
 	// Display for debug
@@ -79,11 +75,11 @@ void ADSBTxView::generate_frame() {
 		str_debug += to_string_hex(adsb_frame[c + 7], 2);
 	text_frame_b.set(str_debug);
 
-	//text_message.set(callsign_formatted);
+	button_callsign.set_text(callsign);
 }
 
 void ADSBTxView::start_tx() {
-	transmitter_model.set_tuning_frequency(452000000);		// FOR TESTING - DEBUG
+	transmitter_model.set_tuning_frequency(434000000);		// FOR TESTING - DEBUG
 	transmitter_model.set_sampling_rate(2000000U);
 	transmitter_model.set_rf_amp(true);
 	transmitter_model.set_lna(40);
@@ -96,7 +92,7 @@ void ADSBTxView::start_tx() {
 }
 
 void ADSBTxView::on_txdone(const int n) {
-	size_t sr;
+	//size_t sr;
 
 	if (n == 200) {
 		transmitter_model.disable();
@@ -112,6 +108,7 @@ void ADSBTxView::on_txdone(const int n) {
 
 ADSBTxView::ADSBTxView(NavigationView& nav) {
 	(void)nav;
+	uint32_t c;
 	
 	baseband::run_image(portapack::spi_flash::image_tag_adsb_tx);
 
@@ -134,6 +131,9 @@ ADSBTxView::ADSBTxView(NavigationView& nav) {
 		&field_lon_degrees,
 		&field_lon_minutes,
 		&field_lon_seconds,
+		&check_emergency,
+		&text_squawk,
+		&field_squawk,
 		&text_frame_a,
 		&text_frame_b,
 		&button_transmit
@@ -161,6 +161,9 @@ ADSBTxView::ADSBTxView(NavigationView& nav) {
 	field_lon_minutes.set_value(0);
 	field_lon_seconds.set_value(0);
 	
+	for (c = 0; c < 4; c++)
+		field_squawk.set_value(c, 0);
+	
 	button_transmit.set_style(&style_val);
 	
 	generate_frame();
diff --git a/firmware/application/ui_adsbtx.hpp b/firmware/application/ui_adsbtx.hpp
index 996c54d6c..3c60048f6 100644
--- a/firmware/application/ui_adsbtx.hpp
+++ b/firmware/application/ui_adsbtx.hpp
@@ -79,11 +79,11 @@ private:
 	};
 	OptionsField options_format {
 		{ 10 * 8, 1 * 16 },
-		10,
+		9,
 		{
 			{ "17: ADS-B", 17 },
 			{ "18: TIS-B", 18 },
-			{ "19: Don't.", 19 },
+			{ "19: MIL  ", 19 },
 		}
 	};
 	
@@ -94,7 +94,7 @@ private:
 	SymField sym_icao {
 		{ 10 * 8, 2 * 16 },
 		6,
-		true	// Hex
+		SymField::SYMFIELD_HEX
 	};
 
 	Text text_callsign {
@@ -145,12 +145,28 @@ private:
 		{ 19 * 8, 7 * 16 }, 2, { 0, 59 }, 1, ' '
 	};
 	
+	Checkbox check_emergency {
+		{ 2 * 8, 9 * 16 - 4 },
+		9,
+		"Emergency",
+		false
+	};
+	Text text_squawk {
+		{ 15 * 8, 9 * 16, 6 * 8, 16 },
+		"Squawk"
+	};
+	SymField field_squawk {
+		{ 22 * 8, 9 * 16 },
+		4,
+		SymField::SYMFIELD_OCT
+	};
+	
 	Text text_frame_a {
-		{ 4 * 8, 12 * 16, 14 * 8, 16 },
+		{ 2 * 8, 13 * 16, 14 * 8, 16 },
 		"-"
 	};
 	Text text_frame_b {
-		{ 4 * 8, 13 * 16, 14 * 8, 16 },
+		{ 2 * 8, 14 * 16, 14 * 8, 16 },
 		"-"
 	};
 	
diff --git a/firmware/application/ui_encoders.hpp b/firmware/application/ui_encoders.hpp
index dc4fd3b89..f91ac7047 100644
--- a/firmware/application/ui_encoders.hpp
+++ b/firmware/application/ui_encoders.hpp
@@ -167,7 +167,8 @@ private:
 	};
 	SymField symfield_word {
 		{ 2 * 8, 12 * 8 },
-		20
+		20,
+		SymField::SYMFIELD_DEF
 	};
 	Text text_format {
 		{ 2 * 8, 14 * 8, 24 * 8, 16 },
diff --git a/firmware/application/ui_numbers.hpp b/firmware/application/ui_numbers.hpp
index 1075648a5..7be75e51d 100644
--- a/firmware/application/ui_numbers.hpp
+++ b/firmware/application/ui_numbers.hpp
@@ -132,7 +132,7 @@ private:
 	SymField symfield_code {
 		{ 20, 5 * 16 },
 		25,
-		false
+		SymField::SYMFIELD_DEF
 	};
 	
 	Checkbox check_armed {
diff --git a/firmware/application/ui_rds.hpp b/firmware/application/ui_rds.hpp
index bcdc0ecb7..320c726bb 100644
--- a/firmware/application/ui_rds.hpp
+++ b/firmware/application/ui_rds.hpp
@@ -181,7 +181,7 @@ private:
 	SymField sym_pi_code {
 		{ 4 * 8, 32 + 8 },
 		4,
-		true
+		SymField::SYMFIELD_HEX
 	};
 	
 	Text text_coverage {
diff --git a/firmware/baseband/proc_tones.cpp b/firmware/baseband/proc_tones.cpp
index 003d1607a..8104143d2 100644
--- a/firmware/baseband/proc_tones.cpp
+++ b/firmware/baseband/proc_tones.cpp
@@ -128,7 +128,7 @@ void TonesProcessor::on_message(const Message* const p) {
 			tone_durations[c] = shared_memory.bb_data.tones_data.tone_defs[c].duration;
 		}
 		message_length = message.tone_count;
-		fm_delta = message.fm_delta * 32768;
+		fm_delta = message.fm_delta * (0xFFFFFFFFULL / 1536000);
 		audio_out = message.audio_out;
 		dual_tone = message.dual_tone;
 		
diff --git a/firmware/common/ui_widget.cpp b/firmware/common/ui_widget.cpp
index b2464c06f..17ea133d0 100644
--- a/firmware/common/ui_widget.cpp
+++ b/firmware/common/ui_widget.cpp
@@ -1160,37 +1160,36 @@ int32_t NumberField::clip_value(int32_t value) {
 
 /* SymField **************************************************************/
 
-SymField::SymField(
-	Point parent_pos,
-	size_t length
-) : Widget { { parent_pos, { static_cast<ui::Dim>(8 * length), 16 } } },
-	length_ { length }
-{
-	set_focusable(true);
-}
-
 SymField::SymField(
 	Point parent_pos,
 	size_t length,
-	bool hex
+	symfield_type type
 ) : Widget { { parent_pos, { static_cast<ui::Dim>(8 * length), 16 } } },
 	length_ { length },
-	hex_ { hex }
+	type_ { type }
 {
-	uint8_t c;
+	uint32_t c;
 	
-	// Hex field auto-init
-	for (c = 0; c < length; c++)
-		set_symbol_list(c, "0123456789ABCDEF");
+	// Auto-init
+	if (type == SYMFIELD_OCT) {
+		for (c = 0; c < length; c++)
+			set_symbol_list(c, "01234567");
+	} else if (type == SYMFIELD_DEC) {
+		for (c = 0; c < length; c++)
+			set_symbol_list(c, "0123456789");
+	} else if (type == SYMFIELD_HEX) {
+		for (c = 0; c < length; c++)
+			set_symbol_list(c, "0123456789ABCDEF");
+	}
 	
 	set_focusable(true);
 }
 
 uint64_t SymField::value_hex_u64() {
-	uint8_t c;
+	uint32_t c;
 	uint64_t v = 0;
 	
-	if (hex_) {
+	if (type_ != SYMFIELD_DEF) {
 		for (c = 0; c < length_; c++)
 			v += values_[c] << (4 * (length_ - 1 - c));
 		return v;
diff --git a/firmware/common/ui_widget.hpp b/firmware/common/ui_widget.hpp
index dc6758a0a..fea00dc3b 100644
--- a/firmware/common/ui_widget.hpp
+++ b/firmware/common/ui_widget.hpp
@@ -475,8 +475,14 @@ public:
 	std::function<void(SymField&)> on_select { };
 	std::function<void()> on_change { };
 
-	SymField(Point parent_pos, size_t length);
-	SymField(Point parent_pos, size_t length, bool hex);
+	enum symfield_type {
+		SYMFIELD_OCT,
+		SYMFIELD_DEC,
+		SYMFIELD_HEX,
+		SYMFIELD_DEF		// User DEFined
+	};
+	
+	SymField(Point parent_pos, size_t length, symfield_type type);
 
 	SymField(const SymField&) = delete;
 	SymField(SymField&&) = delete;
@@ -499,7 +505,7 @@ private:
 	uint32_t selected_ = 0;
 	size_t length_, prev_length_ = 0;
 	bool erase_prev_ = false;
-	bool hex_ = false;
+	symfield_type type_ { };
 
 	int32_t clip_value(const uint32_t index, const uint32_t value);
 };
diff --git a/firmware/portapack-h1-havoc.bin b/firmware/portapack-h1-havoc.bin
index a5024266c..700b474c6 100644
Binary files a/firmware/portapack-h1-havoc.bin and b/firmware/portapack-h1-havoc.bin differ