Advanced Features
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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 to a channel. The radio will 
also unmute to any digital activity on a digital channel.
Procedure: 
Place the preprogrammed PL Defeat switch in the PL Defeat 
position. 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.
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.