General Radio Operation
English
45
Monitoring a Channel
Procedure:
Press the preprogrammed Monitor button and proceed to
Step 3.
OR
Follow the procedure below.
1 Select the desired zone and channel.
2 Listen for a transmission.
3 Adjust the Volume Change MFK if necessary.
4 Press and hold the PTT button to transmit. The LED lights
up solid red.
5 Release the PTT button to receive (listen).
The Carrier Squelch indicator appears on the display when you
monitor a channel via the preprogrammed Monitor button.
Conventional Mode Operation
Your radio may be preprogrammed to receive Private-Line
®
(PL) calls.
Procedure:
1 Momentarily press the Monitor button to listen for activity.
The Carrier Squelch indicator appears on the display.
2 Press and hold the Monitor button to set continuous
monitor operation. The duration of the button press is
programmable.
3 Press the Monitor button again, or the PTT button, to return
to the original squelch setting.
If you try to transmit on a receive-only channel, you hear an
invalid tone until you release the PTT button.
APX_4000_M3.book Page 45 Thursday, March 13, 2014 10:59 AM
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