8
RELM Wireless Corp.
CHANNEL GUARD OPERATION
SQUELCH CONTROL
Sub-audible signaling (CTCSS/CDCSS) is used
to allow a group of radios to be selectively called
in a system. Programming the receive guard
equal to zero allows for Carrier Squelch
operation, where the radio will unmute whenever
a carrier is detected.
CHANNEL GUARD RECEIVE
1.
Turn power on by turning the Volume knob
clockwise.
2.
Select a Channel Guard channel by turning
the Channel Selector knob.
3. Adjust volume by turning the Squelch knob
clockwise until a noise is heard. Set the
volume to a comfortable level.
4. Set Channel Guard Mode
by turning the
Squelch knob off (counterclockwise) into the
Channel Guard position. A message will be
heard only when the proper Channel Guard
value is received.
CHANNEL GUARD TRANSMIT
1.
Turn the Squelch knob on (clockwise) and
monitor the Channel Guard channel before
transmitting, or, if Busy Channel operation is
enabled, check the yellow LED.
NOTE:
Do not transmit if the channel is
busy.
2. Press the PTT switch. When the transmitter
is on, the red Transmit Indicator glows and
TX
appears in the display.
3.
If monitoring the channel,
reset the squelch
knob
to the Channel Guard position to
receive only the messages with the proper
Channel Guard value. During extended
Busy Channel
Indicator
Summary of Contents for GPH Plus
Page 1: ......
Page 35: ...34 RELM Wireless Corp NOTES ...
Page 36: ...GPH Plus Owner s Manual 35 NOTES ...
Page 37: ......