       return xcmd_mode(answer, cmd);
     case 'P':
       return xcmd_presentation(answer, cmd);
+    case 'V':
+      return xcmd_voltage(answer, cmd);
   }
 
   return xcmd_help(answer, cmd);

}

//----------------------------------------
// Process an external command.
//     cmd     address of command string buffer
//     index   index of last char in string buffer

    switch (event)
    {
      case vfo_RLeft:
        if (VfoFrequency <= MinFreq)
          break;
        VfoFrequency -= offset2bump[VfoSelectDigit];
        if (VfoFrequency < MinFreq)
          VfoFrequency = MinFreq;
        break;
      case vfo_RRight:
        if (VfoFrequency >= MaxFreq)
