diff --git a/GB3TX/GB3TX.ino b/GB3TX/GB3TX.ino
index 933f0eb..e9d6d0a 100644
--- a/GB3TX/GB3TX.ino
+++ b/GB3TX/GB3TX.ino
@@ -1,14 +1,13 @@
 #include "config.h"
 #include "repeater.h"
 
-#define PIP_OUT 13
-
 void setup() {
   pinMode(3, OUTPUT);
   pinMode(8, OUTPUT);
   pinMode(9, OUTPUT);
-  pinMode(7, INPUT);
+  pinMode(7, INPUT_PULLUP);
   pinMode(6, INPUT_PULLUP);
+  pinMode(PIP_ATT, OUTPUT);
 }
 
 void loop() {
@@ -35,13 +34,15 @@ void loop() {
 
   delay(1000);
   myrpt->transmitter.tx = true;
-  //sendID(myrpt);
+  sendID(myrpt);
   myrpt->state = SLEEP;
  
   unsigned long ht = millis();
   unsigned long tot = ht;
   unsigned long kc;
   unsigned long id = ht;
+  serial_writer(&myrpt->serial, "READY");
+  digitalWrite(PIP_ATT, LOW);
   while (1) {
     rx(myrpt);
 
diff --git a/GB3TX/config.h b/GB3TX/config.h
index 6f3f873..04859d7 100644
--- a/GB3TX/config.h
+++ b/GB3TX/config.h
@@ -2,6 +2,7 @@
 #define CONFIG_H
 
 /* IO */
+#define PIP_ATT 13
 #define GW_COS 6
 #define COS 7
 #define PTT 8
@@ -26,7 +27,7 @@
 #define TAILPIP_PITCH 500
 
 /* SERIAL */
-#define SERIAL false
+#define SERIAL true
 #define SERIAL_SPEED 115200
 
 /* TIMERS */
diff --git a/GB3TX/cw.ino b/GB3TX/cw.ino
index 7a78d84..bbe697e 100644
--- a/GB3TX/cw.ino
+++ b/GB3TX/cw.ino
@@ -37,14 +37,27 @@ void sendChar(int speed, int pitch, char c) {
 }
 
 void sendID(repeater* myrpt) {
+  bool pip_att = false;
   if (myrpt->callsign == NULL) {
     return;
   }
   
   for (int i=0; i < sizeof ID/sizeof ID[0]; i++) {
+    /* attenuate pips in active T/T 
+    * unless first ID from sleep 
+    */
+    if (myrpt->state != KEYCHUNK && busy(myrpt) && !pip_att) {
+      pip_att = true;
+      digitalWrite(PIP_ATT, HIGH);
+    }
+
     sendChar(myrpt->params.cw_speed, myrpt->params.cw_pitch, myrpt->callsign[i]);
     delay(myrpt->params.cw_speed * 3);
-  }
 
+    if (!busy(myrpt) && pip_att) {
+      pip_att = false;
+      digitalWrite(PIP_ATT, LOW);
+    }
+  }
 }