Garmin 240 Pilot's Manual page 4

GMA 240 Audio Panel
Pilot's
Squelch
Knob
ON/OFF
and Pilot's
Volume
Knob
Music On/
Off Key
Music 1 or 2
Select Key Selection Keys
4
Com Receiver
Keys
Transceiver Telephone
Volume/Squelch: Rotating the Pilot Volume Knob (left small
knob) controls the ON and OFF function (Full CCW detent is
OFF). The large left knob controls Pilot squelch.
Pulling the right volume knob (small knob) controls music
volume, pushing in controls Copilot and passenger volume.
The large right knob controls Copilot and passenger squelch.
Garmin GMA 240 Pilot's Guide
Monitor Mute
Key
Pilot ICS
Key Isolation
Key
Copilot/
Passenger
Squelch Knob
Copilot/
Passenger/
Music Volume
Knob
Nav Receiver and
AUX Audio Keys
Intercom
Mute Key and
Radio Mute
Key
190-00917-00 Rev. A
Music Audio
or Telephone
Input Jack