Garmin GNC 255A Pilot's Guide

2-2 Garmin GNC 255A/255B Pilot’s Guide 190-01182-01 Rev. E
Basic Operation
2.1.2 Monitoring the Standby COM Channel
COM Frequency Monitor Annunciation
The Frequency Monitoring function allows you to monitor the standby frequency for
activity, while listening to the active frequency.
Press the MON key in the COM function to listen to the standby frequency. A small
“MN” will replace the “STB” to the left of the standby frequency.
When the active frequency receives a signal, the unit will switch automatically to the
active frequency. The active frequency quality is not affected. The Frequency Monitor
function is turned off by pressing the MON key again. Monitoring is not canceled by
switching to NAV mode.
2.1.3 Saving a COM Channel
The current standby frequency may be saved into the COM User Frequency database
from the COM display or the COM User Function. The COM User Frequency
database can hold up to fifteen frequencies.
NOTE
When switching from 8.33 kHz to 25 kHz mode, any 8.33 kHz-specific user
frequencies will be deleted from the user frequency list. This only affects the user
frequencies within the 8.33 kHz spectrum.
COM User Frequency Name Selection
1. Press ENT.
2. Turn the inner knob to select characters.
3. Turn the outer knob to move the cursor.
4. After selecting characters, press ENT.
5. Turn the outer knob to select the waypoint type.
6. Turn the inner knob to select the type from the list.
7. Press ENT to save displayed value.
Press CLR to cancel the changes.
Monitor
Annunciation
Monitored
Standby
Frequency
Number of
Frequencies Saved

Garmin GNC 255A Specifications

General

Brand	Garmin
Model	GNC 255A
Category	Transceiver
Language	English