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5-12 
Viking Portable 600 Radio Operating Manual
Conventional Mode Features
5.10.1 Selecting a Scan List
Conventional systems are programmed with a default scan list that is normally selected by 
all channels in that system. However, there is a programmable option to slave a particular 
conventional scan list to a zone. This then becomes the default list for all conventional 
channels in that zone (it overrides the system programming). This slave feature is 
programmed.
The default scan list (which is to be used by all conventional channels except those 
belonging to slaved zones), can be temporarily changed by using the SCAN option switch 
or menu parameters. A scan list selected in this manner is retained through radio power 
down.
Currently if the user presses and holds the Scan button, the Scan List Select feature is 
activated. This function may be disabled on a per-system basis by programming.
5.10.2 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. Then once scanning resumes, it transmits on the selected 
channel.
Vote Scan - Analog - Scan based on received signal strength (analog channels). 
Vote Scan - Digital - Scan based on received signal strength (digital channels). 
Talkgroup on Active Scan - Monitors a single digital conventional channel. When a 
call is received, the radio searches the scan list for a talkgroup that matches the received 
talkgroup. Returns calls on the received talkgroup if the user talks back during scan 
hold time.
Preliminary Draft 3/9/12