diff --git a/firmware/application/Makefile b/firmware/application/Makefile
index 4b9641ee..766ac296 100755
--- a/firmware/application/Makefile
+++ b/firmware/application/Makefile
@@ -164,6 +164,7 @@ CPPSRC = main.cpp \
          ui_rds.cpp \
          ui_lcr.cpp \
          ui_whistle.cpp \
+         ui_jammer.cpp \
          ui_afsksetup.cpp \
          ui_console.cpp \
          ui_receiver.cpp \
diff --git a/firmware/application/ui_jammer.cpp b/firmware/application/ui_jammer.cpp
new file mode 100644
index 00000000..68a6137a
--- /dev/null
+++ b/firmware/application/ui_jammer.cpp
@@ -0,0 +1,252 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * 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_jammer.hpp"
+#include "ui_receiver.hpp"
+
+#include "ch.h"
+#include "evtimer.h"
+
+#include "ff.h"
+#include "hackrf_gpio.hpp"
+#include "portapack.hpp"
+#include "radio.hpp"
+
+#include "hackrf_hal.hpp"
+#include "portapack_shared_memory.hpp"
+#include "portapack_persistent_memory.hpp"
+
+#include <cstring>
+#include <stdio.h>
+
+using namespace hackrf::one;
+
+namespace ui {
+
+void JammerView::focus() {
+	options_preset.focus();
+}
+
+JammerView::~JammerView() {
+	transmitter_model.disable();
+}
+
+void JammerView::paint(Painter& painter) {
+
+}
+
+void JammerView::updfreq(uint8_t id, rf::Frequency f) {
+	char finalstr[25] = {0};
+	uint8_t c;
+	
+	auto mhz = to_string_dec_int(f / 1000000, 3);
+	auto hz100 = to_string_dec_int((f / 100) % 10000, 4, '0');
+
+	strcat(finalstr, mhz.c_str());
+	strcat(finalstr, ".");
+	strcat(finalstr, hz100.c_str());
+	strcat(finalstr, "M");
+
+	while (strlen(finalstr) < 10) {
+		strcat(finalstr, " ");
+	}
+
+	if (id == 0) {
+		range1_min = f;
+		this->button_setfreq1_min.set_text(finalstr);
+	}
+	if (id == 1) {
+		range1_max = f;
+		this->button_setfreq1_max.set_text(finalstr);
+	}
+	if (id == 2) {
+		range2_min = f;
+		this->button_setfreq2_min.set_text(finalstr);
+	}
+	if (id == 3) {
+		range2_max = f;
+		this->button_setfreq2_max.set_text(finalstr);
+	}
+	if (id == 4) {
+		range3_min = f;
+		this->button_setfreq3_min.set_text(finalstr);
+	}
+	if (id == 5) {
+		range3_max = f;
+		this->button_setfreq3_max.set_text(finalstr);
+	}
+	
+	rf::Frequency center;
+	std::string bw;
+	
+	for (c = 0; c < 3; c++) {
+		if (c == 0)	center = (range1_min + range1_max) / 2;
+		if (c == 1)	center = (range2_min + range2_max) / 2;
+		if (c == 2)	center = (range3_min + range3_max) / 2;
+		
+		if (c == 0)	bw = to_string_dec_int(abs(range1_max - range1_min) / 1000, 5);
+		if (c == 1)	bw = to_string_dec_int(abs(range2_max - range2_min) / 1000, 5);
+		if (c == 2)	bw = to_string_dec_int(abs(range3_max - range3_min) / 1000, 5);
+		
+		auto center_mhz = to_string_dec_int(center / 1000000, 4);
+		auto center_hz100 = to_string_dec_int((center / 100) % 10000, 4, '0');
+
+		strcpy(finalstr, "C:");
+		strcat(finalstr, center_mhz.c_str());
+		strcat(finalstr, ".");
+		strcat(finalstr, center_hz100.c_str());
+		strcat(finalstr, "M W:");
+		strcat(finalstr, bw.c_str());
+		strcat(finalstr, "kHz");
+		
+		while (strlen(finalstr) < 23) {
+			strcat(finalstr, " ");
+		}
+		
+		if (c == 0) this->text_info1.set(finalstr);
+		if (c == 1) this->text_info2.set(finalstr);
+		if (c == 2) this->text_info3.set(finalstr);
+	}
+}
+
+JammerView::JammerView(
+	NavigationView& nav,
+	TransmitterModel& transmitter_model
+) : transmitter_model(transmitter_model)
+{
+	static constexpr Style style_val {
+		.font = font::fixed_8x16,
+		.background = Color::green(),
+		.foreground = Color::black(),
+	};
+	
+	static constexpr Style style_cancel {
+		.font = font::fixed_8x16,
+		.background = Color::red(),
+		.foreground = Color::black(),
+	};
+	
+	static constexpr Style style_info {
+		.font = font::fixed_8x16,
+		.background = Color::black(),
+		.foreground = Color::grey(),
+	};
+	
+	transmitter_model.set_modulation(18);
+	transmitter_model.set_tuning_frequency(persistent_memory::tuned_frequency());
+	
+	add_children({ {
+		&text_type,
+		&options_modulation,
+		&text_sweep,
+		&options_sweep,
+		&text_preset,
+		&options_preset,
+		&text_hop,
+		&options_hop,
+		&checkbox_range1,
+		&checkbox_range2,
+		&checkbox_range3,
+		&button_setfreq1_min,
+		&button_setfreq1_max,
+		&text_info1,
+		&button_setfreq2_min,
+		&button_setfreq2_max,
+		&text_info2,
+		&button_setfreq3_min,
+		&button_setfreq3_max,
+		&text_info3,
+		&button_transmit,
+		&button_exit
+	} });
+	
+	button_transmit.set_style(&style_val);
+	text_info1.set_style(&style_info);
+	text_info2.set_style(&style_info);
+	text_info3.set_style(&style_info);
+	
+	options_preset.on_change = [this](size_t n, OptionsField::value_t v) {
+		(void)n;
+		uint8_t c;
+		
+		for (c = 0; c < 3; c++) {
+			updfreq(c*2, range_presets[v][c].min);
+			updfreq((c*2)+1, range_presets[v][c].max);
+			if (c == 0) checkbox_range1.set_value(range_presets[v][c].active);
+			if (c == 1) checkbox_range2.set_value(range_presets[v][c].active);
+			if (c == 2) checkbox_range3.set_value(range_presets[v][c].active);
+		}
+	};
+	
+	button_setfreq1_min.on_select = [this,&nav](Button&){
+		auto new_view = new FrequencyKeypadView { nav, range1_min };
+		new_view->on_changed = [this](rf::Frequency f) {
+			updfreq(0, f);
+		};
+		nav.push(new_view);
+	};
+	button_setfreq1_max.on_select = [this,&nav](Button&){
+		auto new_view = new FrequencyKeypadView { nav, range1_max };
+		new_view->on_changed = [this](rf::Frequency f) {
+			updfreq(1, f);
+		};
+		nav.push(new_view);
+	};
+	
+	button_transmit.on_select = [this,&transmitter_model](Button&){
+		/*uint16_t c;
+		ui::Context context;
+		
+		make_frame();
+			
+		shared_memory.afsk_samples_per_bit = 228000/persistent_memory::afsk_bitrate();
+		shared_memory.afsk_phase_inc_mark = persistent_memory::afsk_mark_freq()*(65536*1024)/2280;
+		shared_memory.afsk_phase_inc_space = persistent_memory::afsk_space_freq()*(65536*1024)/2280;
+
+		for (c = 0; c < 256; c++) {
+			shared_memory.lcrdata[c] = this->lcrframe[c];
+		}
+		
+		shared_memory.afsk_transmit_done = false;
+		shared_memory.afsk_repeat = 5;		// DEFAULT
+
+		text_status.set("Send...");*/
+		
+		if (jamming == true) {
+			jamming = false;
+			button_transmit.set_style(&style_val);
+			button_transmit.set_text("START");
+			transmitter_model.disable();
+		} else {
+			jamming = true;
+			button_transmit.set_style(&style_cancel);
+			button_transmit.set_text("STOP");
+			transmitter_model.enable();
+		}
+	};
+
+	button_exit.on_select = [&nav](Button&){
+		nav.pop();
+	};
+	
+}
+
+} /* namespace ui */
diff --git a/firmware/application/ui_jammer.hpp b/firmware/application/ui_jammer.hpp
new file mode 100644
index 00000000..d74ffc86
--- /dev/null
+++ b/firmware/application/ui_jammer.hpp
@@ -0,0 +1,243 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * 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.hpp"
+#include "ui_widget.hpp"
+#include "ui_painter.hpp"
+#include "ui_menu.hpp"
+#include "ui_navigation.hpp"
+#include "ui_font_fixed_8x16.hpp"
+#include "clock_manager.hpp"
+#include "message.hpp"
+#include "rf_path.hpp"
+#include "max2837.hpp"
+#include "volume.hpp"
+#include "transmitter_model.hpp"
+
+namespace ui {
+
+class JammerView : public View {
+public:
+	JammerView(NavigationView& nav, TransmitterModel& transmitter_model);
+	~JammerView();
+	
+	void updfreq(uint8_t id, rf::Frequency f);
+	void focus() override;
+	void paint(Painter& painter) override;
+
+private:
+	rf::Frequency range1_min;
+	rf::Frequency range1_max;
+	rf::Frequency range2_min;
+	rf::Frequency range2_max;
+	rf::Frequency range3_min;
+	rf::Frequency range3_max;
+	
+	typedef struct rangepreset {
+		bool active;
+		rf::Frequency min;
+		rf::Frequency max;
+	} rangepreset;
+	
+	const rangepreset range_presets[8][3] = {
+		// Orange
+		{{ true, 935000000, 945000000 },	// GSM 900
+		{ true, 1808000000, 1832000000 },	// GSM 1800
+		{ true, 2154900000, 2169700000 }},	// UMTS
+		
+		// SFR
+		{{ true, 950000000, 960000000 },	// GSM 900
+		{ true, 1832000000, 1853000000 },	// GSM 1800
+		{ true, 2110500000, 2125300000 }},	// UMTS
+		
+		// Bouygues
+		{{ true, 925000000, 935000000 },	// GSM 900
+		{ true, 1858000000, 1880000000 },	// GSM 1800
+		{ true, 2125300000, 2140100000 }},	// UMTS
+		
+		// Free
+		{{ true, 945000000, 950000000 },	// GSM 900
+		{ false, 0, 0 },					// GSM 1800
+		{ true, 2144900000, 2149900000 }},	// UMTS
+		
+		// GSM-R
+		{{ true, 921000000, 925000000 },	// GSM 900
+		{ false, 0, 0 },					// GSM 1800
+		{ false, 0, 0 }},					// UMTS
+		
+		// TODO: TDD UMTS, voir doc Arcep
+		// TODO: Wi-FI, BT: 2 400 et 2 483,5 MHz
+		
+		// DECT
+		{{ true, 1880000000, 1900000000 },	// BW: 20MHz
+		{ false, 0, 0 },
+		{ false, 0, 0 }},
+		
+		// Optifib, lol
+		{{ true, 162930000, 162970000 },	// BW: 40kHz
+		{ false, 0, 0 },
+		{ false, 0, 0 }},
+		
+		// ISM 433
+		{{ true, 433050000, 434790000 },	// BW: 0.2%
+		{ false, 0, 0 },
+		{ false, 0, 0 }}
+		
+	};
+	
+	bool jamming = false;
+	rf::Frequency f;
+	TransmitterModel& transmitter_model;
+	
+	Text text_type {
+		{ 1 * 8, 1 * 16, 40, 16 },
+		"Type:"
+	};
+	OptionsField options_modulation {
+		{ 7 * 8, 1 * 16 },
+		4,
+		{
+			{ "Ramp ", 0 },
+			{ "FM   ", 1 },
+			{ "PSK  ", 2 },
+			{ "Tones", 3 }
+		}
+	};
+	
+	Text text_sweep {
+		{ 1 * 8, 2 * 16, 6 * 8, 16 },
+		"Sweep:"
+	};
+	OptionsField options_sweep {
+		{ 8 * 8, 2 * 16 },
+		8,
+		{
+			{ "  1Hz", 0 },
+			{ " 10Hz", 1 },
+			{ "100Hz", 2 },
+			{ " 1kHz", 3 },
+			{ " 5kHz", 4 },
+			{ "10kHz", 5 },
+			{ "20kHz", 6 },
+			{ "50kHz", 7 }
+		}
+	};
+	
+	Text text_hop {
+		{ 1 * 8, 4 * 16, 10 * 8, 16 },
+		"Range hop:"
+	};
+	OptionsField options_hop {
+		{ 12 * 8, 4 * 16 },
+		6,
+		{
+			{ "  10s", 0 },
+			{ "   5s", 1 },
+			{ "   1s", 2 },
+			{ " 0.1s", 3 },
+			{ " 10ms", 4 },
+			{ "  1ms", 5 }
+		}
+	};
+	
+	Text text_preset {
+		{ 1 * 8, 3 * 16, 8 * 8, 16 },
+		"Presets:"
+	};
+	OptionsField options_preset {
+		{ 10 * 8, 3 * 16 },
+		8,
+		{
+			{ "Orange  ", 0 },
+			{ "SFR     ", 1 },
+			{ "Bouygues", 2 },
+			{ "Free    ", 3 },
+			{ "GSM-R   ", 4 },
+			{ "DECT    ", 5 },
+			{ "Optifib ", 6 },
+			{ "ISM 433 ", 7 },
+		}
+	};
+	
+	Checkbox checkbox_range1 {
+		{ 1 * 8, 6 * 16},
+		"Range 1"
+	};
+	Checkbox checkbox_range2 {
+		{ 1 * 8, 9 * 16 + 4},
+		"Range 2"
+	};
+	Checkbox checkbox_range3 {
+		{ 1 * 8, 12 * 16 + 8 },
+		"Range 3"
+	};
+	
+	Button button_setfreq1_min {
+		{ 13 * 8, 6 * 16 - 4 - 1, 11 * 8, 18 },
+		"----.----M"
+	};
+	Button button_setfreq1_max {
+		{ 13 * 8, 7 * 16 - 4, 11 * 8, 18 },
+		"----.----M"
+	};
+	Text text_info1 {
+		{ 3 * 8, 8 * 16 - 4 + 2, 25 * 8, 16 },
+		"C:----.----M W:-----kHz"
+	};
+	
+	Button button_setfreq2_min {
+		{ 13 * 8, 9 * 16 - 1, 11 * 8, 18 },
+		"----.----M"
+	};
+	Button button_setfreq2_max {
+		{ 13 * 8, 10 * 16, 11 * 8, 18 },
+		"----.----M"
+	};
+	Text text_info2 {
+		{ 3 * 8, 11 * 16 + 2, 25 * 8, 16 },
+		"C:----.----M W:-----kHz"
+	};
+	
+	Button button_setfreq3_min {
+		{ 13 * 8, 12 * 16 + 4 - 1, 11 * 8, 18 },
+		"----.----M"
+	};
+	Button button_setfreq3_max {
+		{ 13 * 8, 13 * 16 + 4, 11 * 8, 18 },
+		"----.----M"
+	};
+	Text text_info3 {
+		{ 3 * 8, 14 * 16 + 4 + 2, 25 * 8, 16 },
+		"C:----.----M W:-----kHz"
+	};
+	
+	Button button_transmit {
+		{ 2 * 8, 16 * 16, 64, 32 },
+		"START"
+	};
+	
+	Button button_exit {
+		{ 21 * 8, 16 * 16, 64, 32 },
+		"Exit"
+	};
+};
+
+} /* namespace ui */
diff --git a/firmware/application/ui_navigation.cpp b/firmware/application/ui_navigation.cpp
index 651bf4a0..5b2e65d4 100644
--- a/firmware/application/ui_navigation.cpp
+++ b/firmware/application/ui_navigation.cpp
@@ -33,6 +33,7 @@
 #include "ui_rds.hpp"
 #include "ui_lcr.hpp"
 #include "ui_whistle.hpp"
+#include "ui_jammer.hpp"
 
 #include "portapack.hpp"
 #include "m4_startup.hpp"
@@ -105,7 +106,7 @@ SystemMenuView::SystemMenuView(NavigationView& nav) {
 	add_items<10>({ {
 		{ "Play dead", ui::Color::red(),  [&nav](){ nav.push(new PlayDeadView 		{ nav, false }); } },
 		{ "Receiver", ui::Color::white(), [&nav](){ nav.push(new ReceiverView       { nav, receiver_model }); } },
-		{ "Capture", ui::Color::white(),  [&nav](){ nav.push(new NotImplementedView { nav }); } },
+		{ "Jammer", ui::Color::white(),   [&nav](){ nav.push(new JammerView			{ nav, transmitter_model }); } },
 		{ "Whistle", ui::Color::white(),  [&nav](){ nav.push(new WhistleView 		{ nav, transmitter_model }); } },
 		{ "RDS TX", ui::Color::yellow(),  [&nav](){ nav.push(new RDSView            { nav, transmitter_model }); } },
 		{ "LCR TX", ui::Color::orange(),  [&nav](){ nav.push(new LCRView            { nav, transmitter_model }); } },
diff --git a/firmware/application/ui_whistle.cpp b/firmware/application/ui_whistle.cpp
index 76ee53a6..9cc180bc 100644
--- a/firmware/application/ui_whistle.cpp
+++ b/firmware/application/ui_whistle.cpp
@@ -76,7 +76,6 @@ WhistleView::WhistleView(
 	transmitter_model.set_tuning_frequency(persistent_memory::tuned_frequency());
 	
 	add_children({ {
-		&button_scan,
 		&button_transmit,
 		&button_exit
 	} });
@@ -98,17 +97,17 @@ WhistleView::WhistleView(
 		shared_memory.afsk_transmit_done = false;
 		shared_memory.afsk_repeat = 5;		// DEFAULT
 
-		text_status.set("Send...");
+		text_status.set("Send...");*/
 		
-		transmitter_model.enable();*/
+		transmitter_model.enable();
 	};
 
 	button_exit.on_select = [&nav](Button&){
 		nav.pop();
 	};
 
-	static VirtualTimer vt1;
-	msg_t msg, result;
+	//static VirtualTimer vt1;
+	//msg_t msg, result;
 
 	/*static EvTimer evt;
 	static EventListener el0;
@@ -119,14 +118,14 @@ WhistleView::WhistleView(
 	
 	//chVTSet(&vt1, MS2ST(2000), whistle_th, (void *)&mbox);
 	
-    while(1) {
+    //while(1) {
         /*result = chMBFetch(&mbox, &msg, TIME_INFINITE);
         if(result == RDY_OK) {
             if(msg & 1)
                 button_scan.set_text("POUET");
         }*/
-        chThdSleepMilliseconds(500);
-    }
+        //chThdSleepMilliseconds(500);
+    //}
 	
 }
 
diff --git a/firmware/baseband/main.cpp b/firmware/baseband/main.cpp
index 660bd935..73257bcf 100755
--- a/firmware/baseband/main.cpp
+++ b/firmware/baseband/main.cpp
@@ -889,6 +889,71 @@ private:
 	int32_t sample, sig, frq;
 };
 
+#define POLY_MASK_32 0xB4BCD35C
+
+class JammerProcessor : public BasebandProcessor {
+public:
+	void execute(buffer_c8_t buffer) override {
+        
+		for (size_t i = 0; i<buffer.count; i++) {
+
+			/*if (s > 3000000) {
+				s = 0;
+				feedback = lfsr & 1;
+				lfsr >>= 1;
+				if (feedback == 1)
+					lfsr ^= POLY_MASK_32;
+			} else {
+				s++;
+			}
+
+			aphase += lfsr;*/
+			
+			/*if (s >= 10) {
+				s = 0;
+				aphase += 353205;	// DEBUG
+			} else {
+				s++;
+			}
+			
+			sample = sintab[(aphase & 0x03FF0000)>>16];*/
+			
+			if (s >= 10) {
+				if (sample < 128)
+					sample++;
+				else
+					sample = -127;
+				s = 0;
+			} else {
+				s++;
+			}
+			
+			//FM
+			frq = sample << 17;		// Bandwidth
+			
+			//65536 -> 0.6M
+			//131072 -> 1.2M
+			
+			phase = (phase + frq);
+			sphase = phase + (256<<16);
+
+			re = sintab[(sphase & 0x03FF0000)>>16];
+			im = sintab[(phase & 0x03FF0000)>>16];
+			
+			buffer.p[i] = {(int8_t)re,(int8_t)im};
+		}
+	}
+
+private:
+    int32_t s, lfsr32 = 0xABCDE;
+	int8_t re, im;
+	int feedback;
+	int32_t lfsr;
+    uint32_t sample_count;
+	uint32_t aphase, phase, sphase;
+	int32_t sample, frq;
+};
+
 static BasebandProcessor* baseband_processor { nullptr };
 static BasebandConfiguration baseband_configuration;
 
@@ -1163,6 +1228,11 @@ int main(void) {
 				direction = baseband::Direction::Transmit;
 				baseband_processor = new ToneProcessor();
 				break;
+				
+			case 18:
+				direction = baseband::Direction::Transmit;
+				baseband_processor = new JammerProcessor();
+				break;
 
 			default:
 				break;
diff --git a/firmware/common/ui.hpp b/firmware/common/ui.hpp
index 862d3495..a61e3d08 100644
--- a/firmware/common/ui.hpp
+++ b/firmware/common/ui.hpp
@@ -83,6 +83,10 @@ struct Color {
 	static constexpr Color white() {
 		return { 255, 255, 255 };
 	}
+	
+	static constexpr Color grey() {
+		return { 127, 127, 127 };
+	}
 };
 #if 0
 enum class CardinalDirection : uint8_t {
diff --git a/firmware/portapack-h1-firmware.bin b/firmware/portapack-h1-firmware.bin
index 9d94eb64..a61a5540 100644
Binary files a/firmware/portapack-h1-firmware.bin and b/firmware/portapack-h1-firmware.bin differ