diff --git a/src/configuration.h b/src/configuration.h
index ed851ed8f..08956678d 100644
--- a/src/configuration.h
+++ b/src/configuration.h
@@ -162,6 +162,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // This string must exactly match the case used in release file names or the android updater won't work
 #define HW_VENDOR "tbeam"
 
+// Jm's TXRX Deduplexer
+#define RADIO_TXRX 2
+
+
 // #define BUTTON_NEED_PULLUP // if set we need to turn on the internal CPU pullup during sleep
 
 #define I2C_SDA 21
diff --git a/src/main.cpp b/src/main.cpp
index 61bb2be14..84ea99c05 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -245,6 +245,16 @@ void setup()
     SEGGER_RTT_ConfigUpBuffer(SEGGER_STDOUT_CH, NULL, NULL, 1024, SEGGER_RTT_MODE_NO_BLOCK_TRIM);
 #endif
 
+// Jm's TXRX Deduplexer
+//  if 0 - receive
+//     1 - transmit
+pinMode(RADIO_TXRX, OUTPUT);
+digitalWrite(RADIO_TXRX, 0);
+
+#ifdef USE_SEGGER
+    SEGGER_RTT_ConfigUpBuffer(0, NULL, NULL, 0, SEGGER_RTT_MODE_NO_BLOCK_TRIM);
+#endif
+
 // Debug
 #ifdef DEBUG_PORT
     DEBUG_PORT.init(); // Set serial baud rate and init our mesh console
diff --git a/src/mesh/RadioLibInterface.cpp b/src/mesh/RadioLibInterface.cpp
index 0d8fbc007..069403adf 100644
--- a/src/mesh/RadioLibInterface.cpp
+++ b/src/mesh/RadioLibInterface.cpp
@@ -197,6 +197,8 @@ void RadioLibInterface::completeSending()
         txGood++;
         printPacket("Completed sending", p);
 
+        digitalWrite(RADIO_TXRX, 0);
+
         // We are done sending that packet, release it
         packetPool.release(p);
         // DEBUG_MSG("Done with send\n");
@@ -258,6 +260,8 @@ void RadioLibInterface::handleReceiveInterrupt()
 /** start an immediate transmit */
 void RadioLibInterface::startSend(MeshPacket *txp)
 {
+    digitalWrite(RADIO_TXRX, 1);
+
     printPacket("Starting low level send", txp);
     setStandby(); // Cancel any already in process receives