  MICROPHONE GAIN

  This feature adjusts the modulation sensitivity of the microphone
  internal to the radio.  Use Up Arrow/Down Arrow Keys to select the
  sensitivity setting which ranges from -3 dB to +6 dB in increasing
  steps of 3 dB.  NOTE:  This Feature is not available on "A" Model
  MT1000 Radios.
  NOTE: MICROPHONE GAIN is not programmed when the F8 key is pressed.
  To program MICROPHONE GAIN you must program the entire radio from
  the GET-SAVE menu.
