3-2
GTN 625/635/650 Pilot’s Guide
190-01004-03 Rev. P
Com/Nav
3.1 Volume
Com radio volume is adjusted using the
Volume
knob. Turn the
Volume
knob clockwise to increase volume, or counterclockwise to decrease volume.
The level will be maintained until changed.
1. Turn the
Volume
knob to set the Com volume.
Percent of
Maximum Volume
Graphic Scale Showing Volume
Figure 3-3 Com Volume Setting
2. A bar graph showing the relative volume level will indicate the
selected level and will disappear a few seconds after releasing
the
Volume
knob.
3.2 Squelch
The Com radio features an automatic squelch to reject many localized noise
sources. You may override the squelch function by pressing the
Volume
knob.
This facilitates listening to a distant station or setting the desired volume level.
To override the automatic squelch, press the
Volume
knob momentarily.
Press the
Volume
knob again to return to automatic squelch operation. A “SQ”
indication appears above the active Com frequency window in the upper left
corner of the display when automatic squelch is overridden.
Turn to Select MHz
Turn to Select kHz
Active Com Frequency
(Touch to Flip/Flop)
Standby Com
Frequency
Com Control Text
Com Volume and
Squelch Control
Squelch Annunciation
Receive Annunciation
Figure 3-4 Com Controls
While receiving a transmission, an “RX” indication appears in the Com
frequency window to the immediate right of “Com.” A “TX” indication appears
at this location while you are transmitting.
Summary of Contents for GTN 625
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