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3-10
Garmin GTN 625/635/650 Pilot’s Guide
190-01004-03 Rev. B
Foreword
Getting
Started
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Music
Utilities
System
Messages
Symbols
Appendix
Index
8. Touch the Name or Frequency keys to edit the displayed
name or frequency, if desired.
Touch To Edit User
Frequency Name
Touch To Edit User
Frequency Value
Touch To Delete
User Frequency
Figure 3-20 Edit The User Frequency
3.3.3 Emergency Frequency
The GTN 635 or 650 emergency frequency select provides a quick method
of selecting 121.50 MHz as the active frequency in the event of an in-flight
emergency. The emergency frequency select is available whenever the unit is on,
regardless of GPS or cursor status, or loss of the display.
To quickly tune and activate 121.50, press and hold
volume knob or the external remote Com flip-flop key
for approximately two seconds. If the remote key is used,
further changes in Com frequency will not be possible
until the external remote switch is pressed again for two
seconds.
NOTE: Under some circumstances if the Com system loses communication
with the main system, the radio will automatically tune to 121.50 MHz for
transmit and receive regardless of the displayed frequency.
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.