Stuck Microphone; Remote Frequency Selection Control - Garmin GTN 625 Pilot's Manual

3.3.4

Stuck Microphone

Whenever the GTN 635 or 650 is transmitting, a "TX" indication appears
in the Com window. If the push-to-talk key on the microphone is stuck or
accidentally left in the keyed position, or continues to transmit after the key is
released, the Com transmitter automatically times out (or ceases to transmit)
after 30 seconds of continuous broadcasting. You will also receive a "Com push-
to-talk key stuck" message as long as the stuck condition exists.
3.3.5

Remote Frequency Selection Control

On units configured for remote Com frequency Recall, pressing the remote
recall switch will load the next preset Com frequency into the unit' s Standby
frequency box. The remote recall switch can be pressed multiple times to scroll
the entire preset frequency list through the Standby frequency box (the list will
"wrap" from the bottom of the list back up to the top, skipping any empty preset
positions).
The standby frequency isn't activated until a Com flip-flop switch (either
remote- or bezel-mounted) is pressed. Remote Frequency Selection only
functions on units configured for a remote Com Frequency recall switch.
NOTE: For software prior to version 5.00, frequencies must be stored in
the User Frequency List prior to utilizing the remote channel select switch.
190-01004-03 Rev. F Garmin GTN 625/635/650 Pilot's Guide
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3-11