Kustom Signals Falcon HR Operator's Manual page 45

7.1.4 ADJUSTING A UDIO
Adjust the Doppler audio for the desired listening level.
Press the AUD switch. The TARGET window will
display "Aud" and the PATROL window will display the
current audio level. This display will remain for
approximately two (2) seconds unless another switch is
pressed.
While "Aud" is displayed, press either the down arrow
(Audio) or up arrow (Range) to decrease or increase the
audio level. The displays will return to their normal mode
two (2) seconds after the last switch is released.
7.1.5 AUDIO UNSQUELCH
To unsquelch the audio, press AUD then press MODE
while "Aud" is showing in the TARGET window. "Un"
will be displayed, and the audio will be unsquelched. To
return to squelched audio, repeat this step.
7.1.6 RANGE
Set the range control to the desired level. Press the RNG
switch and "rnG" will be displayed, along with the current
level (1-5). The range can be increased or decreased by
pressing the up arrow (Range) or down arrow (Audio).
The FalconHR will return to normal operation with the
new range level approximately two (2) seconds after the
last switch activation.
Range level 5 is the maximum range, and range level 1
reduces the target detection range to its minimum distance,
typically 250 feet (90 meters).
7.4