 {
   // TODO: in some cases it is not necessary to switch relay off
   switchRealyToBand( FILTER_BAND_None );
-  
+
   // turn off ptt key here
 }
-
-

  if( band != FILTER_BAND_3 ) { digitalWrite(pinBAND3, HIGH); }
  if( band != FILTER_BAND_4 ) { digitalWrite(pinBAND4, HIGH); }
  if( band != FILTER_BAND_5 ) { digitalWrite(pinBAND5, HIGH); }
  
  // --- Activate specified relay.
  if( band == FILTER_BAND_0 ) { digitalWrite(pinBAND0, LOW); }
  if( band == FILTER_BAND_1 ) { digitalWrite(pinBAND1, LOW); }

    {
      switchToNextBandIfNeed(true);
    }

  }
  else if( commandBuffer.startsWith(F("temperature")) )
  {
