     if (radio.getCtcssToneDetected()) {
       if (muted) {
         muted = false;
-  //      radio.setUnmute();
+        radio.setUnmute();
         Serial.println("tone");
       }
     } else {
       if (!muted) {
         muted = true;
-  //      radio.setMute();
+        radio.setMute();
         Serial.println("no tone");
       }
     }

  Serial.print("ctcss tone: ");
  Serial.println(radio.getCtcssFreqHz());
  // mute audio until we get a CTCSS tone
//  radio.setMute();
  muted = true;
    
  // configure Arduino LED for

      // set to transmit
      radio.setModeTransmit();
      Serial.println("Tx");

      radio.setUnmute(); // can't mute during transmit
      muted = false;
    }
  } else if (currently_tx) {
    radio.setModeReceive();
    currently_tx = false;
    Serial.println("Rx");

    radio.setMute(); // default to mute during rx
    muted = true;
  }
  
  // handle serial commands
