diff --git a/firmware/application/external/external.cmake b/firmware/application/external/external.cmake
index 03844fcb..8560cf68 100644
--- a/firmware/application/external/external.cmake
+++ b/firmware/application/external/external.cmake
@@ -111,6 +111,10 @@ set(EXTCPPSRC
 	external/shoppingcart_lock/main.cpp
 	external/shoppingcart_lock/shoppingcart_lock.cpp	
 
+	#ookbrute
+	external/ookbrute/main.cpp
+	external/ookbrute/ui_ookbrute.cpp
+
 	#cvs_spam
 	external/cvs_spam/main.cpp
 	external/cvs_spam/cvs_spam.cpp		
@@ -143,5 +147,6 @@ set(EXTAPPLIST
 	sstvtx
 	random_password
 	#acars_rx
+	ookbrute
 	shoppingcart_lock
 )
diff --git a/firmware/application/external/external.ld b/firmware/application/external/external.ld
index 362cce89..cfcc20fb 100644
--- a/firmware/application/external/external.ld
+++ b/firmware/application/external/external.ld
@@ -50,6 +50,7 @@ MEMORY
     ram_external_app_acars_rx(rwx) : org = 0xADC90000, len = 32k
     ram_external_app_shoppingcart_lock(rwx) : org = 0xADCA0000, len = 32k    
     ram_external_app_cvs_spam(rwx) : org = 0xADCB0000, len = 32k 
+    ram_external_app_ookbrute(rwx) : org = 0xADCC0000, len = 32k 
 }
 
 SECTIONS
@@ -217,4 +218,10 @@ SECTIONS
         *(*ui*external_app*cvs_spam*);
     } > ram_external_app_cvs_spam
 
+   .external_app_ookbrute : ALIGN(4) SUBALIGN(4)
+    {
+        KEEP(*(.external_app.app_ookbrute.application_information));
+        *(*ui*external_app*ookbrute*);
+    } > ram_external_app_ookbrute
+
 }
diff --git a/firmware/application/external/ookbrute/main.cpp b/firmware/application/external/ookbrute/main.cpp
new file mode 100644
index 00000000..bed52c42
--- /dev/null
+++ b/firmware/application/external/ookbrute/main.cpp
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * 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_ookbrute.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::ookbrute {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<OokBruteView>();
+}
+}  // namespace ui::external_app::ookbrute
+
+extern "C" {
+
+__attribute__((section(".external_app.app_ookbrute.application_information"), used)) application_information_t _application_information_ookbrute = {
+    /*.memory_location = */ (uint8_t*)0x00000000,
+    /*.externalAppEntry = */ ui::external_app::ookbrute::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "OokBrute",
+    /*.bitmap_data = */ {
+        0x20,
+        0x00,
+        0x20,
+        0x00,
+        0x20,
+        0x00,
+        0x20,
+        0x00,
+        0xE0,
+        0x07,
+        0xF0,
+        0x0F,
+        0x30,
+        0x0C,
+        0x30,
+        0x0C,
+        0xF0,
+        0x0F,
+        0xF0,
+        0x0F,
+        0x70,
+        0x0D,
+        0xB0,
+        0x0E,
+        0x70,
+        0x0D,
+        0xB0,
+        0x0E,
+        0xF0,
+        0x0F,
+        0xE0,
+        0x07,
+    },
+    /*.icon_color = */ ui::Color::orange().v,
+    /*.menu_location = */ app_location_t::TX,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_ook */ {'P', 'O', 'O', 'K'},
+    /*.m4_app_offset = */ 0x00000000,  // will be filled at compile time
+};
+}
diff --git a/firmware/application/external/ookbrute/ui_ookbrute.cpp b/firmware/application/external/ookbrute/ui_ookbrute.cpp
new file mode 100644
index 00000000..55378a2e
--- /dev/null
+++ b/firmware/application/external/ookbrute/ui_ookbrute.cpp
@@ -0,0 +1,253 @@
+/*
+ * Copyright (C) 2024 HTotoo
+ *
+ * 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_ookbrute.hpp"
+#include "audio.hpp"
+#include "rtc_time.hpp"
+#include "baseband_api.hpp"
+#include "string_format.hpp"
+#include "portapack_persistent_memory.hpp"
+
+using namespace portapack;
+using namespace ui;
+
+namespace ui::external_app::ookbrute {
+
+void OokBruteView::focus() {
+    button_startstop.focus();
+}
+
+OokBruteView::OokBruteView(NavigationView& nav)
+    : nav_{nav} {
+    add_children({
+        &button_startstop,
+        &field_frequency,
+        &tx_view,
+        &options_atkmode,
+        &field_start,
+        &field_stop,
+    });
+
+    button_startstop.on_select = [this](Button&) {
+        if (is_running) {
+            is_running = false;
+            stop();
+        } else {
+            is_running = true;
+            start();
+        }
+    };
+
+    options_atkmode.on_change = [this](size_t, int32_t i) {
+        update_start_stop(i);
+        validate_start_stop();
+    };
+    field_start.on_change = [this](int32_t) {
+        validate_start_stop();
+    };
+    field_stop.on_change = [this](int32_t) {
+        validate_start_stop();
+    };
+    update_start_stop(0);
+}
+
+void OokBruteView::update_start_stop(uint32_t proto) {
+    uint8_t bits = 12;
+    switch (proto) {
+        default:
+        case 0:
+        case 2:
+        case 4:
+            bits = 12;
+            break;
+        case 1:
+        case 3:
+        case 5:
+            bits = 24;
+            break;
+    }
+    uint32_t max = (1 << bits) - 1;
+    field_start.set_range(0, max);
+    field_stop.set_range(0, max);
+    field_start.set_value(0);
+    field_stop.set_value(max);
+}
+
+void OokBruteView::validate_start_stop() {
+    if (field_start.value() > field_stop.value()) {
+        field_start.set_value(field_stop.value());
+    }
+    if (field_stop.value() < field_start.value()) {
+        field_stop.set_value(field_start.value());
+    }
+}
+
+void OokBruteView::generate_packet() {
+    uint32_t protocol = options_atkmode.selected_index_value();
+    uint8_t byte = 0;
+    size_t bitstream_length = 0;
+    uint8_t* bitstream = shared_memory.bb_data.data;  // max 512 in size
+    uint32_t samples_per_bit = 0;                     // OOK_SAMPLERATE * bit_duration_in_sec
+    std::string dataFormat = "";
+    std::string zero = "";
+    std::string one = "";
+    uint16_t databits = 0;
+    uint16_t repeat = 1;
+    uint16_t pause_sym = 0;
+    if (protocol == 0) {  // came 12
+        samples_per_bit = OOK_SAMPLERATE / ((3 * 1000) / 1);
+        dataFormat = "0000000000000000000000000000000000001CCCCCCCCCCCC0000";  // 36 0 preamble +start bit + data
+        databits = 12;
+        zero = "011";
+        one = "001";
+        repeat = 2;
+        pause_sym = 0;
+    }
+
+    if (protocol == 1) {  // came24
+        samples_per_bit = OOK_SAMPLERATE / ((3 * 1000) / 1);
+        dataFormat = "0000000000000000000000000000000000001CCCCCCCCCCCCCCCCCCCCCCCC0000";  // 36 0 preamble +start bit + data
+        databits = 24;
+        zero = "011";
+        one = "001";
+        repeat = 2;
+        pause_sym = 0;
+    }
+    if (protocol == 2) {  // nice12
+        samples_per_bit = OOK_SAMPLERATE * (680.0 / 1000000.0);
+        dataFormat = "000000000000000000000000000000000000000001CCCCCCCCCCCC0000";  // 36 0 preamble +start bit + data
+        databits = 12;
+        zero = "011";
+        one = "001";
+        repeat = 2;
+        pause_sym = 0;
+    }
+    if (protocol == 3) {  // nice24
+        samples_per_bit = OOK_SAMPLERATE * (680.0 / 1000000.0);
+        dataFormat = "000000000000000000000000000000000000000001CCCCCCCCCCCCCCCCCCCCCCCC0000";  // 36 0 preamble +start bit + data
+        databits = 24;
+        zero = "011";
+        one = "001";
+        repeat = 2;
+        pause_sym = 0;
+    }
+    if (protocol == 4) {  // holtek_ht12
+        samples_per_bit = OOK_SAMPLERATE * (390.0 / 1000000.0);
+        dataFormat = "0000000000000000000000000000000000001CCCCCCCCCCCC00000000000";  // 36 0 preamble +start bit + data.
+        databits = 12;
+        zero = "011";
+        one = "001";
+        repeat = 2;
+        pause_sym = 0;
+    }
+    if (protocol == 5) {                                                                      // princeton24
+        samples_per_bit = OOK_SAMPLERATE * (450.0 / 1000000.0);                               // long = 3*
+        dataFormat = "000000000000000000000000000000000000CCCCCCCCCCCCCCCCCCCCCCCC10000000";  //
+        databits = 24;
+        zero = "1000";
+        one = "1110";
+        repeat = 6;
+        pause_sym = 0;
+    }
+
+    std::string fragments = "";  // storage
+
+    uint16_t cdb = 0;            // current data bit
+    for (auto c : dataFormat) {  // generate fragments from template
+        if (c == '0') fragments += '0';
+        if (c == '1') fragments += '1';
+        if (c == 'C') {
+            if (counter & (1 << (databits - cdb - 1))) {
+                fragments += one;
+            } else {
+                fragments += zero;
+            }
+            cdb++;
+        }
+    }
+
+    // create bitstream
+    for (auto c : fragments) {
+        byte <<= 1;
+        if (c != '0') byte |= 1;
+        if ((bitstream_length & 7) == 7)
+            bitstream[bitstream_length >> 3] = byte;
+        bitstream_length++;
+    }
+
+    // Finish last byte if needed
+    size_t padding = 8 - (bitstream_length & 7);
+    if (padding != 8) {
+        byte <<= padding;
+        bitstream[(bitstream_length + padding - 1) >> 3] = byte;
+        padding++;
+    }
+
+    // send bitstream
+    baseband::set_ook_data(
+        bitstream_length,
+        samples_per_bit,
+        repeat,
+        pause_sym,
+        0);
+}
+
+void OokBruteView::stop() {
+    transmitter_model.disable();
+    baseband::shutdown();
+    button_startstop.set_text(LanguageHelper::currentMessages[LANG_START]);
+}
+
+void OokBruteView::start() {
+    counter = field_start.value();
+    baseband::run_prepared_image(portapack::memory::map::m4_code.base());
+    transmitter_model.enable();
+    button_startstop.set_text(LanguageHelper::currentMessages[LANG_STOP]);
+    generate_packet();
+}
+
+void OokBruteView::on_tx_progress(const bool done) {
+    if (done) {
+        if (is_running) {
+            counter++;
+            field_start.set_value(counter);
+            if (counter > (uint32_t)field_stop.value()) {
+                stop();
+            } else {
+                generate_packet();
+            }
+        }
+    }
+}
+
+OokBruteView::~OokBruteView() {
+    is_running = false;
+    stop();
+}
+
+}  // namespace ui::external_app::ookbrute
+
+/*
+
+https://web.archive.org/web/20230331125843/https://phreakerclub.com/447
+
+
+*/
\ No newline at end of file
diff --git a/firmware/application/external/ookbrute/ui_ookbrute.hpp b/firmware/application/external/ookbrute/ui_ookbrute.hpp
new file mode 100644
index 00000000..c3f7100a
--- /dev/null
+++ b/firmware/application/external/ookbrute/ui_ookbrute.hpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2024 HTotoo
+ *
+ * This file is part of PortaPack.
+ *
+ */
+
+#ifndef __UI_OOKBRUTE_H__
+#define __UI_OOKBRUTE_H__
+
+#include "ui.hpp"
+#include "ui_language.hpp"
+#include "ui_navigation.hpp"
+#include "ui_transmitter.hpp"
+#include "ui_freq_field.hpp"
+#include "ui_record_view.hpp"
+#include "app_settings.hpp"
+#include "radio_state.hpp"
+#include "utility.hpp"
+
+using namespace ui;
+
+namespace ui::external_app::ookbrute {
+
+#define OOK_SAMPLERATE 2280000U
+
+class OokBruteView : public View {
+   public:
+    OokBruteView(NavigationView& nav);
+    ~OokBruteView();
+
+    void focus() override;
+
+    std::string title() const override {
+        return "OokBrute";
+    };
+
+   private:
+    NavigationView& nav_;
+    TxRadioState radio_state_{
+        433920000 /* frequency */,
+        1750000 /* bandwidth */,
+        OOK_SAMPLERATE /* sampling rate */
+    };
+
+    TxFrequencyField field_frequency{
+        {0 * 8, 0 * 16},
+        nav_};
+    TransmitterView2 tx_view{
+        {11 * 8, 0 * 16},
+        /*short_ui*/ true};
+    app_settings::SettingsManager settings_{
+        "tx_ookbrute", app_settings::Mode::TX};
+
+    Button button_startstop{
+        {0, 3 * 16, 96, 24},
+        LanguageHelper::currentMessages[LANG_START]};
+
+    NumberField field_start{
+        {0 * 8, 1 * 16},
+        8,
+        {0, 2500},
+        1,
+        ' ',
+        true};
+
+    NumberField field_stop{
+        {11 * 8, 1 * 16},
+        9,
+        {0, 2500},
+        1,
+        ' ',
+        true};
+
+    OptionsField options_atkmode{
+        {0 * 8, 2 * 16},
+        12,
+        {{"Came12", 0},
+         {"Came24", 1},
+         {"Nice12", 2},
+         {"Nice24", 3},
+         {"Holtek12", 4},
+         {"Princeton24", 5}}};
+
+    bool is_running{false};
+
+    uint32_t counter = 0;  // for packet change
+
+    void start();
+    void stop();
+
+    void on_tx_progress(const bool done);
+    void validate_start_stop();
+    void update_start_stop(uint32_t proto);
+    void generate_packet();
+
+    MessageHandlerRegistration message_handler_tx_progress{
+        Message::ID::TXProgress,
+        [this](const Message* const p) {
+            const auto message = *reinterpret_cast<const TXProgressMessage*>(p);
+            this->on_tx_progress(message.done);
+        }};
+};
+};  // namespace ui::external_app::ookbrute
+
+#endif /*__UI_OOKBRUTE_H__*/