Vertex Standard VXA-700 ユーザーズマニュアル

When listening to a very weak signal from an aircraft or
ground station, you may observe the signal disappearing
periodically as the incoming signal strength becomes too
weak to override the squelch threshold setting.

To disable the squelch temporarily, press and hold the
MONITOR key for 2 sec-
onds on the left side of the
radio, just below the PTT
button. The squelch will re-
main open and you should
have a better chance of hear-
ing weak signals.

To return to normal operation, press the MONITOR key
momentarily.

For reduction of impulse noise, such as that produced by
an engine’s ignition system, the ANL feature may prove
helpful.

r To activate the ANL fea-

ture, press the 

 key

m o m e n t a r i l y.   T h e
“ANL” icon will appear
on the display, and you
should observe a reduc-
tion in the ignition noise.

r To turn the ANL feature off, press the 

 key again;

the “ANL” icon will disappear from the display.