User's Manual

Operation GMH Series VHF Radio
BK RADIO Page 3-3
3.2.2 Code Guard Transmit
M
ONITOR THE CHANNEL
, before transmitting on Code Guard channels, by lifting
the microphone off hook or pressing the MON button. Listen to the channel for
a few seconds to ensure that no communications are occurring on the channel.
P
RESS THE
PTT
(Push To Talk) switch on the microphone. The TX annunciator
appears on the display and the red Transmit indicator glows while the PTT is
pressed. Talk in a normal voice with the microphone approximately one to two
inches from your mouth. Release the PTT switch to stop transmitting.
H
ANG UP THE MICROPHONE
when finished. If you pressed the MON button to
monitor the channel, press it again after the transmission to return to Code
Guard operation.
3.3 Button Functions
When the radio is installed, labels are placed on the front push buttons to indicate their
functions. An arrow on the display points to each front mounted push button that is
active. The five push buttons can be programmed with the following functions:
Standard Functions Optional Functions
MON
Monitor Squelch Noise
TA
Repeater Talk Around
GSC
Group Scan
SCN
Channel Scan
CG
Code Guard Disable
SQL
Squelch Adjust
PRI
Priority Scan
GRP
Channel Group
ACC
Accessory 1
PA
Public Address
SPK
External Speaker
ACC
Accessory 2
HOM
Home Channel
NXT
Next Scan Channel
ACC
Accessory 3
LPW
Low Power Select
Each of these controls is described in the following sections.
MON Monitor Squelch Noise
Press the MON button to start or stop monitoring squelch noise. This allows you to set a
comfortable volume level.
SCN Channel Scan
Press the SCN button to start or stop scanning channels in the scan list. Scan operation
occurs only while the radio is not transmitting. To add or delete the current channel from the
scan list, press the SCN button and hold it down for 1 second or more. See “Channel Scan”
on page 3-7.
PRI Priority Scan
Press the PRI button to start or stop priority scanning. The PR annunciator and the flashing
SCN annunciator appear on the display. To make the current channel the fixed priority
channel, press the PRI button and hold it down for 1 second or more. See “Priority Scan” on
page 3-11.