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1 - COM
190-00357-00 Rev E
Section 1 - COM -
Communicating using the
GNS 530W
TheGNS530Wfeaturesadigitally-tunedVHF
COM radio that provides a seamless transition from
communication to navigation. The GNS 530W’s
COM radio operates in the aviation voice band, from
118.000 to 136.975 MHz, in 25 kHz steps (default).
For European operations, a COM radio configuration
of 8.33 kHz steps is also provided.
“TX” appears at the upper right corner of the
COM window while transmitting.
Volume
COM radio volume is adjusted using the COM
power/volume knob. Turn the COM power/volume
knob clockwise to increase volume, or counterclock-
wise to decrease volume.
Squelch
The COM radio features an automatic squelch to
reject many localized noise sources. You may override
the squelch function by pressing the COM power/
volume knob. This facilitates listening to a distant sta-
tion or setting the desired volume level.
Whilereceivingastation,an“RX”indication
appears in the upper right corner of the COM
window—totheimmediaterightof“COM”.A“TX”
indication appears at this location while you are trans-
mitting.
Press the COM power/volume knob momen-
tarily to override the automatic squelch.
Note the “RX” receive indication when
receiving a station.
To override the automatic squelch, press the
COM power/volume knob momentarily. Press COM
power/volume knob again to return to automatic
squelch operation.
Radio Volume / Auto Squelch
GNS 530W only