E F Johnson Company 2425770 Benutzerhandbuch

Viking Portable 600 Radio Operating Manual

5-21

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 <F2> 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 <F2> 
button to select the talkgroup and return to normal operation.

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 on Active Scan option (if programmed) will return calls on the received 
talkgroup if the user talks back during scan hold time. The Talkgroup on Selective Scan 
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.

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.

1 The Talkgroup Lock Feature can be enabled / disabled from a programmable button or 

menu. The radio must be on a P25 Conventional Channel or else the radio will bad 
beep.