User's Manual

Viking VM600 Mobile Radio Operating Manual 6-11
Conventional Features
1 With scanning OFF, press and hold the SCAN option switch until a tone sounds (or use
menu selection). Scanning is OFF when the rotating is not indicated in the right
status display. If required, turn scanning OFF by briefly pressing this switch. If the
SCAN option switch is pressed while scanning, Nuisance Channel Delete described in
Section 5.12.5 is performed.
2 The currently selected list is then indicated in the display as “SCAN LIST x”, where
“x” is the scan list number. Rotate the Select switch to select the desired list and then
exit this mode by pressing the Select or SCAN option switch. A single beep sounds
when the Select switch is pressed (if that option is selected).
6.10.2 Transmitting in Scan Mode
Each conventional scan list can be programmed for one of the following modes. These
modes determine if priority sampling occurs and also the channel on which transmissions
occur while scanning. Refer to the next section for more information on priority sampling.
No Priority - No priority channel sampling occurs when the list is selected. The radio
transmits on the selected channel.
Priority/Tx Selected - Priority sampling occurs and the priority channel or channels
are those programmed in the selected scan list. The radio transmits on the selected
channel.
Priority/Tx Priority (1) - Priority sampling occurs and the priority channel or channels
are those programmed in the selected scan list. The radio transmits on the priority (1)
channel.
Priority (1) on Selected - The priority (1) channel is always the selected channel. The
radio transmits on the selected channel.
Talkback - No priority sampling occurs. The radio transmits on the channel of a call
while scanning is halted or during scan hold time. Then once scanning resumes, it
transmits on the selected channel.
6.10.3 Priority Channel Sampling
The following describes priority sampling when scanning conventional channels.
Note Priority sampling when scanning SMARTNET/SmartZone/P25 Trunked channels is
described in Section 7.11.1.
The priority channel sampling feature ensures that when priority scanning, messages on
the priority channel are not missed while listening to a message on some other channel.
The radio can be programmed as just described so that the priority channel is a fixed
channel programmed in the current scan list, the currently selected channel, or not used.
Draft 4/29/2014