190-00726-00 Rev. JGarmin G900X Pilot’s Guide142AUDIO PANEL AND CNSSYSTEMOVERVIEWFLIGHTINSTRUMENTSEISAUDIO PANEL& CNSFLIGHTMANAGEMENTHAZARDAVOIDANCEAFCSADDITIONALFEATURESAPPENDICESINDEX4.2 COM OPERATIONCOM TRANSCEIVER SELECTION AND ACTIVATIONNOTE: During PA Mode, the COM MIC Annunciator is extinguished and the COM active frequency colorchanges to white, indicating that neither COM transmitter is active.NOTE: When turning on the G900X for use, the system remembers the last frequencies used and the activeCOM transceiver state prior to shutdown.The COM Frequency Box is composed of four fields; the two active frequencies are on the left side andthe two standby frequencies are on the right. Select the COM transceiver for transmitting by pressing theCOM MIC Keys on the Audio Panel. During reception of audio from the COM radio selected for transmission,audio from the other COM radio is muted.An active COM frequency displayed in green indicates that the COM transceiver is selected on the AudioPanel (COM1 MIC or COM2 MIC Key). Both active COM frequencies appearing in white indicate that no COMradio is selected for transmitting (PA Key is selected on the Audio Panel).Frequencies in the standby field are displayed in either white or gray. The standby frequency in the tuningbox is white. The other standby frequency is gray.ActiveFields StandbyFieldsTuning BoxCOM2 Radio is Selectedon the Audio PanelFigure 4-7 Selecting a COM Radio for TransmitTop Section ofthe Audio Panel
