diff --git a/firmware/application/ui_encoders.cpp b/firmware/application/ui_encoders.cpp
index fb9d654a..7e5024fc 100644
--- a/firmware/application/ui_encoders.cpp
+++ b/firmware/application/ui_encoders.cpp
@@ -36,7 +36,7 @@ using namespace portapack;
 namespace ui {
 
 void EncodersView::focus() {
-	bitfield.focus();
+	options_enctype.focus();
 }
 
 EncodersView::~EncodersView() {
@@ -54,8 +54,7 @@ void EncodersView::generate_frame() {
 		if (c == 'S')
 			debug_text += encoder_def->sync;
 		else
-			debug_text += encoder_def->bit_format.at(bitfield.value(i));
-		i++;
+			debug_text += encoder_def->bit_format[symfield_word.value(i++)];
 	}
 	
 	draw_waveform();
@@ -67,7 +66,7 @@ void EncodersView::draw_waveform() {
 	uint8_t prelude_length = 0; 	//encoder_def->sync.length();
 	
 	// Clear
-	painter_->fill_rectangle( { 0, 160, 240, 24 }, Color::black() );
+	painter_->fill_rectangle( { 0, 168, 240, 24 }, Color::black() );
 	
 	x_inc = 230.0 / (debug_text.length() - prelude_length);
 	
@@ -78,9 +77,9 @@ void EncodersView::draw_waveform() {
 			y = 0;
 		
 		// Edge
-		if (prev_y != y) painter_->draw_rectangle( { (Coord)x, 160, 1, 24 }, Color::yellow() );
+		if (prev_y != y) painter_->draw_rectangle( { (Coord)x, 168, 1, 24 }, Color::yellow() );
 		// Level
-		painter_->draw_rectangle( { (Coord)x, 160 + y, ceil(x_inc), 1 }, Color::yellow() );
+		painter_->draw_rectangle( { (Coord)x, 168 + y, (int)ceil(x_inc), 1 }, Color::yellow() );
 		
 		prev_y = y;
 		x += x_inc;
@@ -164,7 +163,7 @@ void EncodersView::on_txdone(int n) {
 }
 
 void EncodersView::start_tx(const bool scan) {
-	char ook_bitstream[64];
+	char ook_bitstream[256];
 	uint32_t ook_bitstream_length;
 	
 	/*if (scan) {
@@ -188,7 +187,7 @@ void EncodersView::start_tx(const bool scan) {
 	generate_frame();
 	
 	// Clear bitstream
-	memset(ook_bitstream, 0, 64);
+	memset(ook_bitstream, 0, 256);
 	
 	size_t n = 0;
 	for (auto c : debug_text) {
@@ -197,7 +196,7 @@ void EncodersView::start_tx(const bool scan) {
 		n++;
 	}
 	
-	ook_bitstream_length = n; // - 1;
+	ook_bitstream_length = n;
 
 	transmitter_model.set_tuning_frequency(433920000);		// TODO: Make modifiable !
 	transmitter_model.set_baseband_configuration({
@@ -211,22 +210,23 @@ void EncodersView::start_tx(const bool scan) {
 	transmitter_model.set_baseband_bandwidth(1750000);
 	transmitter_model.enable();
 	
-	memcpy(shared_memory.tx_data, ook_bitstream, 64);
+	memcpy(shared_memory.tx_data, ook_bitstream, 256);
 	
 	baseband::set_ook_data(
 		ook_bitstream_length,
 		// 2280000/2 = 1140000Hz = 0,877192982us
-		// numberfield_clk.value() / encoder_def->clk_per_symbol
+		// numberfield_clk.value() / encoder_def->clk_per_fragment
 		// 455000 / 12 = 37917Hz = 26,37339452us
-		228000 / ((numberfield_clk.value() * 1000) / encoder_def->clk_per_symbol),
+		228000 / ((numberfield_clk.value() * 1000) / encoder_def->clk_per_fragment),
 		encoder_def->repeat_min,
 		encoder_def->pause_symbols
 	);
 }
 
 void EncodersView::on_type_change(size_t index) {
-	std::string word_format;
-	//size_t data_length;
+	std::string word_format, format_string = "";
+	size_t word_length;
+	char symbol_type;
 	//size_t address_length;
 	
 	enc_type = index;
@@ -235,8 +235,26 @@ void EncodersView::on_type_change(size_t index) {
 
 	numberfield_clk.set_value(encoder_def->default_frequency / 1000);
 	
-	bitfield.set_length(encoder_def->word_length);
-	bitfield.set_range(0, encoder_def->address_bit_states - 1);
+	// SymField setup
+	word_length = encoder_def->word_length;
+	symfield_word.set_length(word_length);
+	size_t n = 0, i = 0;
+	while (n < word_length) {
+		symbol_type = encoder_def->word_format.at(i++);
+		if (symbol_type == 'A') {
+			symfield_word.set_symbol_list(n++, encoder_def->address_symbols);
+			format_string += 'A';
+		} else if (symbol_type == 'D') {
+			symfield_word.set_symbol_list(n++, encoder_def->data_symbols);
+			format_string += 'D';
+		}
+	}
+	
+	// Ugly :( Pad to erase
+	while (format_string.length() < 24)
+		format_string += ' ';
+	
+	text_format.set(format_string);
 	
 	/*word_format = encoder_def->word_format;
 	size_t address_start = word_format.find_first_of("A");
@@ -281,6 +299,7 @@ void EncodersView::on_type_change(size_t index) {
 }
 
 void EncodersView::on_show() {
+	// TODO: Remove ?
 	options_enctype.set_selected_index(enc_type);
 	on_type_change(enc_type);
 }
@@ -295,6 +314,7 @@ EncodersView::EncodersView(NavigationView& nav) {
 	
 	baseband::run_image(portapack::spi_flash::image_tag_ook);
 	
+	// Default encoder def
 	encoder_def = &encoder_defs[0];
 
 	add_children({ {
@@ -309,8 +329,9 @@ EncodersView::EncodersView(NavigationView& nav) {
 		&text_wordduration,
 		&numberfield_wordduration,
 		&text_us2,
-		&text_bitfield,
-		&bitfield,
+		&text_symfield,
+		&symfield_word,
+		&text_format,
 		//&text_format_a,	// DEBUG
 		//&text_format_d,	// DEBUG
 		&text_waveform,
@@ -319,44 +340,50 @@ EncodersView::EncodersView(NavigationView& nav) {
 		&button_transmit
 	} });
 	
+	// Load encoder types
 	for (i = 0; i < ENC_TYPES_COUNT; i++)
 		enc_options.emplace_back(std::make_pair(encoder_defs[i].name, i));
 	
-	options_enctype.set_options(enc_options);
-	options_enctype.set_selected_index(0);
-	
-	bitfield.on_change = [this]() {
-		this->generate_frame();
-	};
-	
-	button_transmit.set_style(&style_val);
-	
 	options_enctype.on_change = [this](size_t index, int32_t value) {
 		(void)value;
 		this->on_type_change(index);
 	};
 	
+	options_enctype.set_options(enc_options);
+	options_enctype.set_selected_index(0);
+	
+	symfield_word.on_change = [this]() {
+		this->generate_frame();
+	};
+	
+	button_transmit.set_style(&style_val);
+	
+	// Selecting input clock changes symbol and word duration
 	numberfield_clk.on_change = [this](int32_t value) {
-		int32_t new_value = 1000000 / (((float)value * 1000) / encoder_def->clk_per_bit);
+		//int32_t new_value = 1000000 / (((float)value * 1000) / encoder_def->clk_per_symbol);
+		// value is in kHz, new_value is in us
+		int32_t new_value = 1000000 / ((value * 1000) / encoder_def->clk_per_symbol);
 		if (new_value != numberfield_bitduration.value()) {
 			numberfield_bitduration.set_value(new_value, false);
 			numberfield_wordduration.set_value(new_value * encoder_def->word_length, false);
 		}
 	};
 	
+	// Selecting symbol duration changes input clock and word duration
 	numberfield_bitduration.on_change = [this](int32_t value) {
-		int32_t new_value = 1000000 / (((float)value * 1000) / encoder_def->clk_per_bit);
+		int32_t new_value = 1000000 / (((float)value * 1000) / encoder_def->clk_per_symbol);
 		if (new_value != numberfield_clk.value()) {
 			numberfield_clk.set_value(new_value, false);
 			numberfield_wordduration.set_value(value * encoder_def->word_length, false);
 		}
 	};
 	
+	// Selecting word duration changes input clock and symbol duration
 	numberfield_wordduration.on_change = [this](int32_t value) {
 		int32_t new_value = value / encoder_def->word_length;
 		if (new_value != numberfield_bitduration.value()) {
 			numberfield_bitduration.set_value(new_value, false);
-			numberfield_clk.set_value(1000000 / (((float)new_value * 1000) / encoder_def->clk_per_bit), false);
+			numberfield_clk.set_value(1000000 / (((float)new_value * 1000) / encoder_def->clk_per_symbol), false);
 		}
 	};
 
diff --git a/firmware/application/ui_encoders.hpp b/firmware/application/ui_encoders.hpp
index 1aefb4d6..abcfce11 100644
--- a/firmware/application/ui_encoders.hpp
+++ b/firmware/application/ui_encoders.hpp
@@ -43,63 +43,61 @@ public:
 
 private:
 	struct encoder_def_t {
-		std::string name;
-		uint8_t address_bit_states;		// Often 0, 1, [f, [4]]
-		uint8_t data_bit_states;		// Often 0, 1
-		uint16_t clk_per_bit;			// Oscillator periods per bit
-		uint16_t clk_per_symbol;		// Oscillator periods per bit fragment
-		std::vector<std::string> bit_format;
-		uint8_t word_length;			// Total # of bits
-		std::string word_format;
-		std::string sync;				// Like bit_format
-		uint32_t default_frequency;		// Default encoder clk frequency
-		uint8_t repeat_min;
-		uint32_t pause_symbols;
+		std::string name;						// Encoder chip ref/name
+		std::string address_symbols;			// "01", "01F"...
+		std::string data_symbols;				// Same
+		uint16_t clk_per_symbol;				// Oscillator periods per symbol
+		uint16_t clk_per_fragment;				// Oscillator periods per symbol fragment (state)
+		std::vector<std::string> bit_format;	// List of fragments for each symbol in previous *_symbols list order
+		uint8_t word_length;					// Total # of symbols (not counting sync)
+		std::string word_format;				// A for Address, D for Data, S for sync
+		std::string sync;						// Like bit_format
+		uint32_t default_frequency;				// Default encoder clk frequency (often set by shitty resistor)
+		uint8_t repeat_min;						// Minimum repeat count
+		uint16_t pause_symbols;					// Length of pause between repeats in symbols
 	};
 
-	// S = Sync
-	// A/D = Address/data bits
 	const encoder_def_t encoder_defs[ENC_TYPES_COUNT] = {
 		// PT2260-R2
 		{
 			"2260-R2",
-			3, 2,
+			"01F", "01",
 			1024, 128,
 			{ "10001000", "11101110", "10001110" },
 			12,	"AAAAAAAAAADDS",
 			"10000000000000000000000000000000",
-			200000,	1,
-			10	// ?
+			150000,	2,
+			0
 		},
 		
 		// PT2260-R4
 		{
 			"2260-R4",
-			3, 2,
+			"01F", "01",
 			1024, 128,
 			{ "10001000", "11101110", "10001110" },
 			12,	"AAAAAAAADDDDS",
 			"10000000000000000000000000000000",
-			200000,	1,
-			10	// ?
+			150000,	2,
+			0
 		},
 		
 		// PT2262
 		{
 			"2262   ",
-			3, 2,
-			1024, 128,
+			"01F", "01F",
+			32, 4,
 			{ "10001000", "11101110", "10001110" },
 			12,	"AAAAAAAAAAAAS",
 			"10000000000000000000000000000000",
-			200000,	1,
-			10	// ?
+			20000,	4,
+			0
 		},
 		
 		// 16-bit ?
 		{
 			"16-bit ",
-			2, 2,
+			"01", "01",
 			32, 8,
 			{ "1110", "1000" },		// Opposite ?
 			16,	"AAAAAAAAAAAAAAAAS",
@@ -111,7 +109,7 @@ private:
 		// RT1527
 		{
 			"1527   ",
-			2, 2,
+			"01", "01",
 			128, 32,
 			{ "1000", "1110" },
 			24,	"SAAAAAAAAAAAAAAAAAAAADDDD",
@@ -123,7 +121,7 @@ private:
 		// HK526E
 		{
 			"526    ",
-			2, 2,
+			"01", "01",
 			24, 8,
 			{ "110", "100" },
 			12,	"AAAAAAAAAAAA",
@@ -135,7 +133,7 @@ private:
 		// HT12E
 		{
 			"12E    ",
-			2, 2,
+			"01", "01",
 			3, 1,
 			{ "011", "001" },
 			12,	"SAAAAAAAADDDD",
@@ -147,7 +145,7 @@ private:
 		// VD5026 13 bits ?
 		{
 			"5026   ",
-			4, 4,
+			"0123", "0123",
 			128, 8,
 			{ "1000000010000000", "1111111011111110", "1111111010000000", "1000000011111110" },
 			12,	"SAAAAAAAAAAAA",
@@ -159,19 +157,19 @@ private:
 		// UM3750
 		{
 			"UM3750 ",
-			2, 2,
+			"01", "01",
 			96, 32,
 			{ "011", "001" },
 			12,	"SAAAAAAAAAAAA",
 			"1",
 			100000,	4,
-			10	// ?
+			0	// ?
 		},
 		
 		// UM3758
 		{
 			"UM3758 ",
-			3, 2,
+			"01F", "01",
 			96, 16,
 			{ "011011", "001001", "011001" },
 			18,	"SAAAAAAAAAADDDDDDDD",
@@ -183,7 +181,7 @@ private:
 		// BA5104
 		{
 			"BA5104 ",
-			2, 2,
+			"01", "01",
 			3072, 768,
 			{ "1000", "1110" },
 			9,	"SDDAAAAAAA",
@@ -195,7 +193,7 @@ private:
 		// MC145026
 		{
 			"145026 ",
-			3, 2,
+			"01F", "01",
 			16, 1,
 			{ "0111111101111111", "0100000001000000", "0111111101000000" },
 			9,	"SAAAAADDDD",
@@ -207,7 +205,7 @@ private:
 		// HT6*** TODO: Add individual variations
 		{
 			"HT6*** ",
-			3, 2,
+			"01F", "01",
 			198, 33,
 			{ "011011", "001001", "001011" },
 			18,	"SAAAAAAAAAAAADDDDDD",
@@ -219,7 +217,7 @@ private:
 		// TC9148
 		{
 			"TC9148 ",
-			2, 2,
+			"01", "01",
 			48, 12,
 			{ "1000", "1110", },
 			12,	"AAAAAAAAAAAA",
@@ -277,25 +275,19 @@ private:
 		.foreground = Color::blue(),
 	};
 	
-	SymField bitfield {
-		{ 16 + 8, 80 },
-		12,
-		{ 0, 1 }
-	};
-	
 	Text text_enctype {
-		{ 2 * 8, 3 * 8, 8 * 8, 16 },
-		"Encoder:"
+		{ 1 * 8, 24, 5 * 8, 16 },
+		"Type:"
 	};
-	OptionsField options_enctype {
-		{ 2 * 8, 5 * 8 },
+	OptionsField options_enctype {		// Options are loaded at runtime
+		{ 6 * 8, 24 },
 		7,
 		{
 		}
 	};
 	
 	Text text_clk {
-		{ 15 * 8, 3 * 8, 4 * 8, 16 },
+		{ 16 * 8, 3 * 8, 4 * 8, 16 },
 		"Clk:"
 	};
 	NumberField numberfield_clk {
@@ -311,46 +303,55 @@ private:
 	};
 	
 	Text text_bitduration {
-		{ 15 * 8, 5 * 8, 4 * 8, 16 },
+		{ 16 * 8, 5 * 8, 4 * 8, 16 },
 		"Bit:"
 	};
 	NumberField numberfield_bitduration {
-		{ 20 * 8, 5 * 8 },
+		{ 21 * 8, 5 * 8 },
 		4,
 		{ 50, 9999 },
 		1,
 		' '
 	};
 	Text text_us1 {
-		{ 24 * 8, 5 * 8, 2 * 8, 16 },
+		{ 25 * 8, 5 * 8, 2 * 8, 16 },
 		"us"
 	};
 	
 	Text text_wordduration {
-		{ 14 * 8, 7 * 8, 5 * 8, 16 },
+		{ 15 * 8, 7 * 8, 5 * 8, 16 },
 		"Word:"
 	};
 	NumberField numberfield_wordduration {
-		{ 20 * 8, 7 * 8 },
+		{ 21 * 8, 7 * 8 },
 		5,
 		{ 300, 99999 },
 		100,
 		' '
 	};
 	Text text_us2 {
-		{ 25 * 8, 7 * 8, 2 * 8, 16 },
+		{ 26 * 8, 7 * 8, 2 * 8, 16 },
 		"us"
 	};
 	
-	Text text_bitfield {
-		{ 2 * 8, 8 * 8, 5 * 8, 16 },
+	Text text_symfield {
+		{ 2 * 8, 9 * 8, 5 * 8, 16 },
 		"Word:"
 	};
+	SymField symfield_word {
+		{ 2 * 8, 11 * 8 },
+		20
+	};
+	Text text_format {
+		{ 2 * 8, 13 * 8, 24 * 8, 16 },
+		""
+	};
+	
 	//Text text_format_a;	// DEBUG
 	//Text text_format_d;	// DEBUG
 	
 	Text text_waveform {
-		{ 1 * 8, 16 * 8, 9 * 8, 16 },
+		{ 1 * 8, 136, 9 * 8, 16 },
 		"Waveform:"
 	};
 	
diff --git a/firmware/common/ui_widget.cpp b/firmware/common/ui_widget.cpp
index fde50073..769480d3 100644
--- a/firmware/common/ui_widget.cpp
+++ b/firmware/common/ui_widget.cpp
@@ -513,6 +513,7 @@ void Console::writeln(std::string message) {
 }
 
 void Console::paint(Painter& painter) {
+	(void)painter;
 	write(buffer);
 }
 
@@ -990,7 +991,7 @@ void OptionsField::set_options(options_t new_options) {
 void OptionsField::paint(Painter& painter) {
 	const auto paint_style = has_focus() ? style().invert() : style();
 	
-	painter.fill_rectangle({screen_rect().pos, {length_ * 8, 16}}, ui::Color::black());
+	painter.fill_rectangle({screen_rect().pos, {(int)length_ * 8, 16}}, ui::Color::black());
 	
 	if( selected_index() < options.size() ) {
 		const auto text = options[selected_index()].first;
@@ -1108,24 +1109,26 @@ int32_t NumberField::clip_value(int32_t value) {
 
 SymField::SymField(
 	Point parent_pos,
-	size_t length,
-	range_t range
+	size_t length
 ) : Widget { { parent_pos, { static_cast<ui::Dim>(8 * length), 16 } } },
-	range { range },
 	length_ { length }
 {
 	set_focusable(true);
 }
 
 uint32_t SymField::value(const uint32_t index) {
+	if (index >= length_) return 0;
+
 	return values_[index];
 }
 
-void SymField::set_value(const uint32_t index, int32_t new_value) {
-	new_value = clip_value(new_value);
+void SymField::set_value(const uint32_t index, const uint32_t new_value) {
+	if (index >= length_) return;
+	
+	uint32_t clipped_value = clip_value(index, new_value);
 
-	if( new_value != values_[index] ) {
-		values_[index] = new_value;
+	if (clipped_value != values_[index]) {
+		values_[index] = clipped_value;
 		if( on_change ) {
 			on_change();
 		}
@@ -1134,34 +1137,38 @@ void SymField::set_value(const uint32_t index, int32_t new_value) {
 }
 
 void SymField::set_length(const uint32_t new_length) {
-	if (new_length <= 30) {
+	if ((new_length <= 32) && (new_length != length_)) {
 		prev_length_ = length_;
 		length_ = new_length;
+		
+		// Clip eventual garbage from previous shorter word
+		for (size_t n = 0; n < length_; n++)
+			set_value(n, values_[n]);
+		
 		erase_prev_ = true;
 		set_dirty();
 	}
 }
 
-void SymField::set_range(const int32_t min, const int32_t max) {
-	size_t n;
+void SymField::set_symbol_list(const uint32_t index, const std::string symbol_list) {
+	if (index >= length_) return;
 	
-	range.first = min;
-	range.second = max;
-	for (n = 0; n < length_; n++)
-		set_value(n, values_[n]);
+	symbol_list_[index] = symbol_list;
+
+	// Re-clip symbol's value
+	set_value(index, values_[index]);
 }
 
 void SymField::paint(Painter& painter) {
-	size_t n;
 	Point pt_draw = screen_pos();
 	
 	if (erase_prev_) {
-		painter.fill_rectangle( { pt_draw, { prev_length_ * 8, 16 } }, Color::black() );
+		painter.fill_rectangle( { pt_draw, { (int)prev_length_ * 8, 16 } }, Color::black() );
 		erase_prev_ = false;
 	}
 	
-	for (n = 0; n < length_; n++) {
-		const auto text = to_string_dec_uint(values_[n], 1);
+	for (size_t n = 0; n < length_; n++) {
+		const auto text = symbol_list_[n].substr(values_[n], 1);
 
 		const auto paint_style = (has_focus() && (n == selected_)) ? style().invert() : style();
 
@@ -1208,25 +1215,28 @@ bool SymField::on_key(const KeyEvent key) {
 }
 
 bool SymField::on_encoder(const EncoderEvent delta) {
-	set_value(selected_, values_[selected_] + delta);
+	int32_t new_value = (int)values_[selected_] + delta;
+	
+	if (new_value >= 0)	
+		set_value(selected_, values_[selected_] + delta);
+	
 	return true;
 }
 
 bool SymField::on_touch(const TouchEvent event) {
-	if( event.type == TouchEvent::Type::Start ) {
+	if (event.type == TouchEvent::Type::Start) {
 		focus();
 	}
 	return true;
 }
 
-int32_t SymField::clip_value(int32_t value) {
-	if( value > range.second ) {
-		value = range.second;
-	}
-	if( value < range.first ) {
-		value = range.first;
-	}
-	return value;
+int32_t SymField::clip_value(const uint32_t index, const uint32_t value) {
+	size_t symbol_count = symbol_list_[index].length() - 1;
+	
+	if (value > symbol_count)
+		return symbol_count;
+	else
+		return value;
 }
 
 } /* namespace ui */
diff --git a/firmware/common/ui_widget.hpp b/firmware/common/ui_widget.hpp
index 54b4fab2..ff9001cb 100644
--- a/firmware/common/ui_widget.hpp
+++ b/firmware/common/ui_widget.hpp
@@ -446,17 +446,15 @@ public:
 	std::function<void(SymField&)> on_select;
 	std::function<void()> on_change;
 
-	using range_t = std::pair<int32_t, int32_t>;
-
-	SymField(Point parent_pos, size_t length, range_t range);
+	SymField(Point parent_pos, size_t length);
 
 	SymField(const SymField&) = delete;
 	SymField(SymField&&) = delete;
 
 	uint32_t value(const uint32_t index);
-	void set_value(const uint32_t index, int32_t new_value);
+	void set_value(const uint32_t index, const uint32_t new_value);
 	void set_length(const uint32_t new_length);
-	void set_range(const int32_t min, const int32_t max);
+	void set_symbol_list(const uint32_t index, const std::string symbol_list);
 
 	void paint(Painter& painter) override;
 
@@ -465,13 +463,13 @@ public:
 	bool on_touch(const TouchEvent event) override;
 
 private:
-	range_t range;
-	int32_t values_[30] = { 0 };
+	std::string symbol_list_[32] = { "01" };		// Failsafe init
+	uint32_t values_[32] = { 0 };
 	uint32_t selected_ = 0;
 	size_t length_, prev_length_;
 	bool erase_prev_ = false;
 
-	int32_t clip_value(int32_t value);
+	int32_t clip_value(const uint32_t index, const uint32_t value);
 };
 
 } /* namespace ui */
diff --git a/firmware/portapack-h1-havoc.bin b/firmware/portapack-h1-havoc.bin
index d08eb549..1a9e73aa 100644
Binary files a/firmware/portapack-h1-havoc.bin and b/firmware/portapack-h1-havoc.bin differ