BK Radio GPH-CMD, Service Manual

Page: 34 / 128

Operation GPH-CMD VHF Radio
Page 3-10
BK RADIO
3.9.1 KEYPAD LOCK
To lock/unlock the keypad, press and hold the [FCN] key. When locked,
“LOCKED” will be displayed if a key is pressed and a low beep will sound.
LOCKOUT EXCEPTIONS:
PTT unlocks the keypad during transmit for enabled DTMF key presses.
3.10 SCAN OPERATION
1. Slide Switch B (scan) up.
2. Slide Switch C (priority) down.
The display indicates scan operation by flashing SCN.
Scan operates only while the radio is not transmitting. The radio checks for
signals on channels in the preset Scan List, as well as the channel selected
by the Channel Selector knob.
When a signal is detected, scanning stops and the message is received. The
received channel is shown in place of the transmit channel.
Once the signal ends, the radio continues to monitor the channel for the
preset scan delay time before it resumes scanning.
3.10.1 SCAN CODE GUARD CHANNELS
1. Slide Switch B (scan) up.
2. Turn the Squelch knob completely counterclockwise, past the detent, to
the Code Guard position.
When a signal is detected, scanning stops while the radio checks for the
proper Code Guard value. If the signal contains the proper Code Guard
value, the radio receives the message. Otherwise, the radio resumes
scanning immediately.
3.10.2 NUISANCE CHANNEL DELETE
If your radio is programmed for Nuisance Channel Delete and Channel Scan
is assigned to a top switch (Switch B, for example), a Nuisance Channel can
be temporarily removed from the Scan List by sliding Switch B down and
then back up.
LOCKED
SCN
LABEL 3
RX SCN
LABEL 6