Garmin G900X Pilot's Manual - page 129

190-00726-00  Rev. A

Garmin G900X Pilot’s Guide

4-7

AUDIO PANEL AND CNS

TRANSMIT/RECEIVE INDICATIONS

During  COM  transmission,  a  white  TX  appears  by  the  active  COM  frequency  replacing  the  Frequency 

Transfer Arrow.  On the Audio Panel, when the active COM is transmitting, the active transceiver 

COM MIC

Key Annunciator flashes approximately once per second.

During COM signal reception, a white RX appears by the active COM frequency replacing the Frequency 

Transfer Arrow.

Figure 4-4  COM Radio Transmit and Receive Indications

Annunciator 

Flashes During 

Transmission

Transmit and 

Receive Indicators

COM TRANSCEIVER MANUAL TUNING

The COM frequency controls and frequency boxes are on the right side of the PFD and MFD.

Manually tuning a COM frequency:

1) 

Turn the 

COM

 Knob to tune the desired frequency in the COM Tuning Box (large knob for MHz; small knob for 

kHz).

2) 

Press the 

Frequency Transfer 

Key to transfer the frequency to the active field.

3) 

Adjust the volume level with the COM 

VOL/SQ

 Knob.

4) 

Press the COM 

VOL/SQ

 Knob to turn automatic squelch on and off.

Turn the 

VOL/SQ

Knob to adjust 

volume.  Press the Knob to Turn 

Automatic Squelch On or Off

Press the 

Frequency Transfer

Key to Transfer COM 

Frequencies Between Active 

and Standby Frequency Boxes

Turn the 

COM

 Knob to 

Tune the Frequency in 

the Tuning Box

Figure 4-5  COM Frequency Tuning