E F Johnson Company 2425770 Benutzerhandbuch

5-14 

Viking Portable 600 Radio Operating Manual

If a fixed priority channel is associated with the current scan list, it can be changed if the 
Priority option button or menu parameter is programmed. With dual priority, this function 
changes only the first priority channel. To change both priority channels, use the Scan List 
Edit function described in Section 4.11.5.1, "Group / Priority Scan Lists".

Proceed as follows to change the priority channel using the Priority option button/menu 
parameter:

1 Make sure scanning is disabled (  icon not displayed) and the desired scan list is 

selected (see Section 4.11.5, "Scan Lists").

2 Select the channel you want to be the priority channel and then press the Priority option 

button or select that menu parameter. “Priority” is then flashed to indicate that the 
current channel is now the priority channel when scanning that list. Other indications 
that may occur are as follows:

- If “No Priority” is displayed, priority sampling may not be enabled on the scan list.

- If “Sel Chan” is displayed, the priority channel is always the selected channel and 

cannot be changed.

- If no indication displayed, the scan list may not be user editable or the channel may 

not be in the scan list.

Standard conventional calls are placed to other radio units monitoring the selected 
channel. The proper coded Call Guard squelch tone or code or P25 NAC may need to be 
transmitted by your radio for them to receive a call (see Sections 5.4 and 5.13.3).

1 Turn power on and set the volume as described in Section 3.1. Select the channel 

programmed for the radio you want to call as described in Section 3.3, "Zone and 
Channel Select".

2 Monitor the channel automatically or manually as described in Section 5.1, 

3 Press the PTT switch and if the Busy Channel Lockout feature is programmed on the 

channel (see Section 5.3, "Busy Channel Lockout"), the transmitter is automatically 
disabled if the channel is busy. Otherwise, busy and out-of-range conditions are not 
indicated.