User's Manual

5-20 Viking™ VP600 Portable Radio Operating Manual
Conventional Mode Features
5.13.6.1 Changing a Channel Talkgroup
If the Digital Talk Group Select option button or Select TG menu parameter is
programmed, the talkgroup assigned to a channel can be changed by the user. The new
talkgroup continues to be assigned to the channel until it is manually changed again
(cycling radio power or selecting another channel does not reselect a default talkgroup).
Change the talkgroup assigned to a channel as follows:
1 Select the channel to be changed.
2 To select the talkgroup from the list of programmed talkgroups, briefly press the Talk
Group Select option button or select the Select TG → ID List menu parameter. Then
press the Up/Down buttons until the alias of the desired talkgroup is displayed. If
talkgroup selection has been disabled on the channel by programming, “NO LIST” is
displayed, a tone sounds, and no change occurs. Press the (Menu) button to select
the talkgroup and return to normal operation.
3 To enter a new talkgroup number from 1-65,535, press and hold the Talk Group Select
option button or select the Select TG → Enter ID menu parameter. Enter the desired
talkgroup directly using the keypad. If less than five digits are entered, press the
(Menu) button to select the talkgroup and return to normal operation. The talkgroup
entered using the keypad must be listed in the talkgroups list, otherwise the display will
flash "Invalid TG".
5.13.7 Talkgroup Scan
This feature allows users to scan for a list of talkgroups on a single P25 Conventional
frequency. When a call is received on the frequency, the radio searches the scan list for a
talkgroup that matches the received talkgroup, and opens audio if a match is found.
The Talkgroup Scan, with talkback type set to active group option (if programmed), will
return calls on the received talkgroup if the user talks back during scan hold time. The
Talkgroup Scan, with talkback type set to selected group option (if programmed), will
always return calls on the talkgroup from the selected channel.
The radio can be programmed to display the talkgroup being transmitted at the beginning
of a conventional digital call. After the display time has passed, the radio displays the
selected channel alias.
5.13.7.1 Talkgroup Lock
Often a user wishes to stay on one specific talkgroup when traveling from site to site. The
Talkgroup Lock feature allows users to store the current active talkgroup to memory and
the radio will use this talkgroup until the Talkgroup Lock feature has been disabled. The
feature can be enabled / disabled with a programmable button or menu item.