Service manual

GPH Series VHF Radio Operation
 Page 3-5
3.3 SCAN OPERATION
3.3.1 Receive
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.
3.3.1.1 Basic Scan
1. Slide Switch B (scan) up.
2. Slide Switch C (priority) down.
The display indicates scan operation by flashing the
SCN
annunciator
(Alphanumeric display) or by flashing bars (7-Segment display)
.
3.3.1.2 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.
3.3.1.3 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.
ABC
ABC