diff --git a/README.md b/README.md
index c6053bb..79ac97c 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,9 @@
 |___\___/  |_|___/___/
                        
 ```
+##
+This is a fork (v0.21) for my personal use of the original io433 project by Krypthor.
+Added "Jam" capability. This is really fun, no on in vincity can use 433Mhz devices :))
 
 ## Description
 
@@ -125,6 +128,7 @@ Plug the ESP32 to a battery or a to a USB-C cable. The current menu structure is
 ├── Dump   # Dump current memory bank to screen and serial (fixed 100kbps, for easy analysis on third party software [ex. PulseView])
 └── More
     ├── Monitor # Dump raw signal to screen and RSSI info
+    ├── Jam     # Simple jam / send random bits on radio
     ├── Raw Out # Dump current signal to serial as fast as possible (default 1Mbps serial)
     └── About   # About menu
 ```
diff --git a/include/CC1101utils.h b/include/CC1101utils.h
index ce994bd..d2c8551 100755
--- a/include/CC1101utils.h
+++ b/include/CC1101utils.h
@@ -1,7 +1,7 @@
 #include <ELECHOUSE_CC1101_SRC_DRV.h>
 
 //#define TICC1101
-//#define E07M1101D
+#define E07M1101D
 
 #ifdef E07M1101D
  #define CCGDO0 25
diff --git a/src/SimpleMenuNav.h b/src/SimpleMenuNav.h
index 9a7a839..aa67756 100755
--- a/src/SimpleMenuNav.h
+++ b/src/SimpleMenuNav.h
@@ -3,7 +3,7 @@
 #include "Free_Fonts.h"
 #include <TFT_eSPI.h> 
 
-#define IO433VERSION "v0.2"
+#define IO433VERSION "v0.21"
 #define BUTTON_UP  35
 #define BUTTON_DOWN  0
 #define LONGCLICK_MS 300
diff --git a/src/main.cpp b/src/main.cpp
index 05d3773..67ac8d6 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -188,6 +188,38 @@ void dump () {
 }
 
 
+void jam (int t) {
+  int i;
+  unsigned int totalDelay = 0;
+  CCInit();
+  CCSetTx();
+  delay(50);
+  int64_t startus = esp_timer_get_time();
+  while (true) {
+    byte n = 0;
+    for (i = 0; i < 60; i++) {
+      CCWrite(n);
+      totalDelay = signal433_current[i]+delayus;
+      delayMicroseconds(totalDelay);
+      if (signal433_current[i] < RESET443) n = !n;
+    }
+     CCWrite(0);
+      if (SMN_isUpButtonPressed()) return;
+      while (SMN_isDownButtonPressed()) delay(100);
+  }
+  CCSetRx();
+  
+  int64_t stopus = esp_timer_get_time();
+  Serial.print("Jam Done (us): ");
+  Serial.println((long)(stopus - startus), DEC);
+
+}
+
+void jam () {
+  jam(1);
+}
+
+
 // THIS IS OBVIOUSLY SLOW
 void rawout() {
   CCInit();
@@ -277,6 +309,7 @@ void setup() {
   |-> REPLAY
   |-> DUMP
   |-> MORE
+      |-> JAM
       |-> MONITOR
       |-> RAW OUT
       |-> ABOUT
@@ -289,6 +322,7 @@ void setup() {
   SimpleMenu *menu_more = new SimpleMenu("More",menu_main,NULL);
 
   SimpleMenu *menu_monitor = new SimpleMenu("Monitor",menu_more,monitormode);
+  SimpleMenu *menu_jam = new SimpleMenu("Jam",menu_more,jam);
   SimpleMenu *menu_load = new SimpleMenu("Raw Out",menu_more,rawout);
   SimpleMenu *menu_about = new SimpleMenu("About",menu_more,SMN_screensaver);