User's Manual

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transmission. If enabled, audible side tones will be heard in the radio speaker
as well. If PTT is pre-programmed as one of the triggers, the microphone will
become active for voice communication after the tone sequence is complete.
Tone encode will be transmitted with Channel Guard if one is defined, and
tones are always transmitted in clear voice mode, even if the channel is set for
digital or private (see VOICE MODES). Digital or private voice transmission
will resume normally after the tone transmission.
SCANNING CONVENTIONAL CHANNELS
Channels, which have been previously added to the scan list on a per system
basis, can be scanned. The selected channel is scanned (if enabled through
programming) whether or not it is in the scan list. Each conventional system's
channel scan list is retained in memory when the radio is turned OFF.
The scan rate will vary depending upon the number of channels in the scan list
and whether or not the radio is programmed to scan for channels with
decoding enabled. Fewer channels will result in a faster scan rate. If
programmed for dual-priority scan operation, the priority-one, priority-two
and the remaining scan list channels are scanned. Once a signal is detected
and the correct encoded squelch signal is decoded (if programmed), the radio
receives the message and displays the received scan channel. At the same
time, scanning continues on the priority-one and priority-two channels. If a
priority-one or priority-two channel carrier, regardless of encoded squelch
decoding, is detected while a non-priority channel is being received, the
display name is updated and the received channel is switched to the priority
channel. Scanning of the priority-one channel will continue if a message is
being received on the priority-two channel.
While receiving a call on a non-priority or a priority two channel, the radio
periodically checks the priority one and two channels. If Scan with Channel
Guard is enabled, the radio will use Channel Guard to decide whether to
unmute on a priority channel. The radio will stop, on squelch detection, on a
priority channel. In normal operation, the radio will unmute only on detecting
the correct Channel Guard; otherwise, it will remain muted until the priority
channel call and hang time have ended. An optional feature allows the radio to
continue scanning upon the detection of the wrong Channel Guard on a
priority channel. The user can then select the rate at which this channel is
scanned until the call ends.
Adding Channels To A Scan List
1. With scan operation turned OFF select the desired channel to add to the
selected conventional system channel scan list.
2. Press
< or > on the SCAN add/delete control. The current status will be
displayed in column 1 of line 1 for a time-out period. Press
< to add the
channel to the scan list. S is displayed on the line. This sets the selected
channel for non-priority scanning. A second press of
< sets the channel