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MN001824A01-AT
Chapter 5: General Radio Operation
The lack of static on a digital channel when you switch from analog to digital radios is not an indication that
the radio is malfunctioning. Digital technology quiets the transmission by removing the noise from the signal
and allows only the clear voice or data information to be heard.
5.8.1
Monitoring a Channel
When and where to use: Do one of the followings to monitor a channel. You can use these options
interchangeably depending on your preference and the programmed functions.
Procedure:
●
Monitoring a Channel with Monitor button.
a. Press the preprogrammed Monitor button.
b. Adjust the Volume Control Knob if necessary.
c. Press and hold the PTT button to transmit.
The LED lights up solid red.
d. Release the PTT button to receive (listen).
The Carrier Squelch indicator appears on the display when you monitor a channel using the
preprogrammed Monitor button.
●
Monitoring a Channel using the selected zone channel.
a. Select the desired zone and channel.
b. Listen for a transmission.
c. Adjust the Volume Control Knob if necessary.
d. Press and hold the PTT button to transmit.
The LED lights up solid red.
e. Release the PTT button to receive (listen).
5.8.2
Monitoring Conventional Mode
This feature allows you to monitor channel traffic on conventional channels by defeating the coded squelch.
Thus, you can listen to another active user on the channel. This way, you may be prevented from taking over
the conversation of another user.
When and where to use: Your radio may be preprogrammed to receive Private-Line
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.
44
®
(PL) calls.
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