Draft 02 - Sep 1 2015
4-20
Viking Mobile Radio Operating Manual
Radio Wide Features
The “GPS” function allows the user to turn GPS on or off. Pressing the button will toggle
the GPS. The display will show “GPS On” or “GPS Off”.
Figure 4.2
GPS Icon
The GPS icon is only applicable to the LCH. The standard Viking Series control head does
not have a GPS icon. The GPS icon has the following three modes:
4.17.1 LRRP
LRRP is the TIA standard that defines sending and receiving location commands and
location data. The radio supports receiving commands from an LSHS and sending data to
the LSHS. The following table shows the LRRP messages supported by the radio. These
interactions do not cover all possible interactions defined in the standard. See the TIA Tier
2 Location Services Document for the full LRRP specification (TIA-102.BAJC).
Table 4.3 GPS Icon Modes
Mode
Description
Off
The icon is not visible because GPS hasn’t
been enabled or has been turned off.
Flashing
GPS is enabled and turned on but has not
gotten satellite sync.
On
The radio has satellite sync and valid data.
Table 4.4 Supported LRRP Messages
Message
Description
Immediate-Location-Request
Sent from the LSHS to the radio. The radio responds with data or an
error.
Immediate-Location-Report
Send from the radio to the LSHS in response to the Immediate-
Location-Request.
Triggered-Location-Request
Sent from the LSHS to the radio. Radio determines if it can do the
specified trigger and responds.
Triggered-Location-Answer
Sent from the radio to the LSHS in response to the Triggered-
Location-Request. Contains information about whether or not the
radio can support the requested trigger.
Triggered-Location-Report
Sent from the radio to the LSHS when a trigger happens.
