E F Johnson Company 2425770 Benutzerhandbuch

6-4 

Viking Portable 600 Radio Operating Manual

• Unlimited - Unit IDs can be selected from a list and also dialed directly using the 

keypad.

DTMF keypad models can be programmed to recall the unit IDs from a preprogrammed 
list. However, only DTMF keypad models can be programmed to directly dial unit IDs.

To recall from a list:

1 Momentarily press the Private Call option button or select that menu parameter and the 

alias of the last called radio is displayed. The private call mode is indicated by 

 in the 

display.

2 If required, select another radio by pressing the Up/Down buttons until the alias of the 

desired radio is displayed.

3 Press the PTT switch or the <F2> button to initiate the call.

(Proceed to the bulleted list which follows Item 3 in the next section for events that may 
occur next.)

To make a direct entry using the DTMF keypad:

1 Press and hold the Private Call option button until a tone sounds. The last ID called is 

displayed, and the private call mode is indicated by 

 in the display.

2 Using the 0-9 keys, dial the ID of the radio you are calling (five digits for Private calls 

and eight digits for Unit calls). To erase the last digit, press the Down button, and to 
cancel the call, press the Private Call Option button again.

3 Press the PTT switch to initiate the call. If the entered number is valid, the display 

indicates the alias of the ID if it matches an ID in the call list. Otherwise, the ID you 
entered continues to be displayed.

Events that may then occur are as follows:

- If the radio being called is on the air, “Wait” is displayed and ringing is heard until 

the called party answers or until the system terminates the call, whichever occurs 
first. Pressing the PTT switch or an option button stops the ringing but not the call. 
When the call is answered, the voice of the called party is heard.

- If the called radio does not answer, a continuous tone sounds and “No Answer” is 

displayed.

- If the called radio is not on the air, a continuous tone sounds instead of the ringing 

tone and “No Ack” is displayed.