Operating instructions

Advanced Features
English
98
Using the Conventional Squelch Operation
Features
This feature filters out unwanted calls with low signal strength or
channels that have a higher than normal background noise.
Analog Options
Tone Private Line (PL), Digital Private-Line (DPL), and carrier
squelch can be available (preprogrammed) per channel.
Digital Options
One or more of the following options may be preprogrammed in
your radio. Check with your dealer or system administrator for
more information.
Using the PL Defeat Feature
This feature allows you to override any coded squelch (DPL or
PL) that might be preprogrammed in a channel. The radio also
unmutes to any digital activity on a digital channel.
Procedure:
Remove the microphone from the hub to enable the PL Defeat
feature. You hear any activity on the channel.
OR
The radio is muted if no activity is present.
Note: When this feature is active, the Carrier Squelch status
indicator is displayed.
Mode Result
Carrier squelch (C) You hear all traffic on a channel.
PL or DPL
The radio responds only to your
messages.
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Option Result
Digital Carrier-Operated
Squelch (COS)
You hear any digital traffic.
Normal Squelch
You hear any digital traffic having
the correct network access code.
Selective Switch
You hear any digital traffic having
the correct network access code
and correct talkgroup.
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O9Head_68007024014_a.book Page 98 Wednesday, June 9, 2010 5:36 PM