predetermined frequency. You hear a medium-
pitched tone and the display shows
Failsoft
.
When the trunking system returns to normal
operation, your radio automatically leaves failsoft
operation and returns to trunked operation.
To continue, in Failsoft, to communicate with other
talkgroups, refer to the following procedure.
1
Use the
MFK
to change to a different repeater
frequency.
2
Press the
PTT
button to talk, and release the
button to listen.
Out-of-Range Radio
When your radio goes out of the range of the system,
it can no longer lock onto a control channel.
You hear a low-pitched tone and/or the display shows
the currently selected zone/channel combination and
Out of range
. Your radio remains in this out-of-
range condition until it locks onto a control channel, it
locks onto a failsoft channel, or it is turned off.
SmartZone
The SmartZone
™
feature extends communications
beyond the reach of a single-trunked site (antenna
location) when operating in a SmartZone system.
SmartZone units provide expanded wide-area
coverage.
SmartZone automatically switches the radio to a
different site when the current site signal becomes
unacceptable. This usually happens when the vehicle
in which the radio is located is driven out of the range
of one site, and into the range of another.
Under normal conditions, a SmartZone-enabled radio
functions invisibly to the operator. However, the
operator does have some manual controls on the
Control Head – the
RSSI
menu entry. This button can
be used to check, or change, the SmartZone
operation.
Site Trunking Feature
If the zone controller loses communication with any
site, that site reverts to site trunking.
The display shows the currently selected zone/
channel combination and
Site trunking
.
Advanced Features
109
English
Summary of Contents for APX MOBILE O3 CONTROL HEAD
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