User Guide

190-00494-00 Rev. B
Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang
4-9
AUDIO PANEL AND CNS
COM TUNING FAILURE
In case of a COM system tuning failure, the emergency frequency (121.500 MHz) is automatically tuned in
the radio in which the tuning failure occurred.
Figure 4-8 COM Tuning Failure
Emergency Channel
Loaded Automatically
QUICK-TUNING AND ACTIVATING 121.500 MHZ
Pressing and holding the COM Frequency Transfer Key for two seconds automatically loads the emergency
COM frequency (121.500 MHz) in the active field of the COM radio selected for tuning (the one with the
transfer arrow). In the example shown, pressing the Audio Panel COM2 MIC Key activates the transceiver.
Figure 4-9 Quickly Tuning 121.500 MHz
Press for Two Seconds to
Load 121.500 MHz