E F Johnson Company 2425720 사용자 설명서

Viking™ VP600 Portable Radio Operating Manual

4-17

If the radio is setup for operation with a GPS receiver, GPS data can be sent to a properly 
configured repeater (digital conventional only).

GPS data can be sent manually, automatically, or on system request, depending upon the 
options enabled.

If so configured, the radio will send GPS data (to a properly configured repeater) when the 
assigned GPS button is pressed and held.

If the radio’s GPS “Auto Transmit” option is enabled, the radio will automatically send 
GPS data at predetermined intervals.

If so configured, the radio accepts P25 data requests for GPS data, and responds (over the 
air) with the current GPS data.

If the radio is not responding to any button/key presses, the keypad may be locked. Refer 
to Section 3.6, "Keypad Lock" for more information.

If “Unprogrammed” is displayed, the cause could be any of the following:

• An unprogrammed channel is selected. Select a programmed channel.

• The selected channel is programmed for an option that is not installed or an error in 

programming was detected. Reprogram the radio.

If no characters appear in the display, the battery may be discharged or defective. Try 
another battery. If some other problem is occurring, turn power off and then on again to 
reset the control logic. Also make sure that the controls are properly set. If it still does not 
operate correctly, return it for service.