Draft 02 - Sep 1 2015
5-20
Viking Mobile Radio Operating Manual
Conventional Mode Features
5.13.3 Network Access Code (NAC)
Project 25 conventional channels also use a NAC (Network Access Code) to control which
calls are received on a channel. The NAC can be 1-4095, and each transmit and receive
channel can be programmed for a different code. Other operation, such as monitoring
before transmitting, is similar to that of analog channels. NAC (and group ID) detect can
be disabled by the monitor mode described in Section 5.2.
5.13.4 EFJohnson System Out-of-Range Indicator
If programmed, Out-of-Range (OOR) monitoring and indicators to the user are provided.
The radio can be programmed to provide an out-of-range indicator when used on an
EFJohnson Infrastructure system. If the radio fails to receive the beacon signal or a voice
call from the system, then (if programmed) an out-of-range status will be indicated on the
radio by a tone, display, or tone and display.
The out-of-Range function operates on conventional analog and digital channels that have
been programmed for the feature. The radio goes out of range if it does not receive
transmission from the current site for a specified time. The radio comes back into range if
it receives a transmission on and OOR channel.
Scanning Mode - the same as above
Unit and Interconnect Calls - OOR operates in the background. Tone indicators will
sound, but the OOR message is not displayed.
PTT Operation - Pressing the PTT does not reset the inactivity timer. If the timer
expires while the radio is transmitting, no indication will be provided to the user until
they release the PTT. When the PTT is released, the radio will flash “Out of Rng” and
beep, if applicable.
If the user is in a fringe area or is entering an area that has poor coverage such as a building
and wishes to disable the tone, an Out-of-Range Indication
Tone feature can be
programmed to the menu or to a button. In the menu, the feature is labeled “OORI Tone”,
and for the Lightning, the soft menu label is “OORI”. The feature will allow the user to
disable / enable the Out-of-Range Indication tone from the radio. The Out of Range
display messages will not be affected.
If the OORI tone is disabled in programming (No Indication, Display Only), pressing
the OORI Tone button results in “Disabled” on the display.
If the OORI Tone is active, pressing the OORI Tone button disables the tone and the
display will flash “OOR Tn Off” (Standard Control Head) or “OOR Tone Off”
(Lightning Control Head) for one second.
If the OOR tone is not active, pressing the OOR Tone button enables the tone and the
display will flash “OOR Tn On” (Standard Control Head) or “OOR Tone On”
(Lightning Control Head) for one second.
