GPH-CMD VHF Radio Operation
BK RADIO
Page 3-7
3.6 CODE GUARD OPERATION
Code Guard
™
allows one radio or a group of radios to be selectively called within a system. If the
radio has been programmed with Code Guard, use the following receive and transmit
instructions.
3.6.1 CODE GUARD RECEIVE
Turn power on by turning the Volume knob clockwise.
Select a Code Guard channel by turning the Channel Selector knob.
Adjust volume by turning the Squelch knob clockwise until a noise is heard.
Set the volume to a comfortable level.
Set Code Guard Mode by turning the Squelch knob off (counterclockwise)
into the Code Guard position. A message will be heard only when the proper
Code Guard value is received.
3.6.2 CODE GUARD TRANSMIT
Turn the Squelch knob on (clockwise) and monitor the Code Guard
channel before transmitting, or, if Busy Channel operation is enabled, check
the yellow LED.
NOTE: Do not transmit if the channel is busy.
Press the PTT switch. When the transmitter is on, the red Transmit Indicator
glows and TX appears in the display.
If monitoring the channel, reset the squelch knob
to the Code Guard position
to receive only the messages with the proper Code Guard value. During
extended transmissions, the squelch can be left open until the exchange has
ended.
Code Guard is a trademark of BK Radio, Inc.
3.7 COMMAND GROUP
The GPH-CMD radio allows construction of a Command Group of up to 20 channels, drawn from
any of the programmed channels in the radio. To modify the Command Group (add or delete
channels) all scanning functions (Channel Scan, Group Scan, and Priority Scan) must be turned
OFF.
Busy Channel
Indicator
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