Mobile Radio Installation
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INSTALLATION
Start the installation with any mechanical work that is
required for fitting the radio mount, cables, etc.
Before drilling any hole in a vehicle check exactly what is
behind the panel that you are drilling. When drilling a
hole always use a drill with a “stop” so that it is
impossible for the drill to go too far. Take extra care to
avoid petrol tanks and pipes, brake lines, other wiring,
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Switch on ignition (but not engine) and check that all
instruments, warning lights etc are displaying “normal”
readings. Now transmit and verify that nothing changes
and that no instrument is disturbed. If the transceiver is
multi-mode, then repeat the test with all modes. If the
transceiver is multi-band, then repeat the test in all
operating bands. In each case use the maximum RF
power. If there is ANY disturbance of the vehicle
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etc. If you have to drill any hole to pass a cable then the
hole must be sealed with a rubber grommet and when
the cable has been passed through you should re-seal
the cable and grommet with a suitable sealant.
If you drill holes for mounting screws, be sure to check
that the screw is a suitable type and length.
Locking type screws, nuts or washers are preferred.
Pay attention to cables inside the passenger
instrumentation then stop and identify the source of
the problem before continuing.
If the above tests have been completed without any
problems, you can proceed to the STATIC operational
checks.
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STATIC OPERATIONALCHECKS
Start the engine of the vehicle and repeat ALL the tests
Pay attention to cables inside the passenger
compartment. They should be secured or routed under
carpets etc. There should be no possibility that they
could move and interfere with any control or pedal.
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BATTERY CONNECTION
Mobile transceivers are usually intended for direct
connection to the battery. Before disconnecting the
battery you need to be aware of some possible
Start the engine of the vehicle and repeat ALL the tests
described in ‘TESTING’. Check that there is no
disturbance of the engine control or engine speed.
With the help of an assistant, switch on the vehicle
lights, indicators, etc. while transmitting. Check that no
unintended flashing or indication occurs.
Stop the engine. If the above checks have been
completed without any problems you can proceed to
battery you need to be aware of some possible
problems:
1) Is the vehicle fitted with an alarm that may not
operate after re-connection?
2) Is the vehicle fitted with any electronic circuit that
may malfunction after re-connection? (engine
management, traction control, braking control, etc.)
3) If in doubt do not disconnect the battery Take the
completed without any problems you can proceed to
the mobile operational checks.
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MOBILE OPERATIONALCHECKS
DO NOT PERFORM THESE CHECKS IN CITY TRAFFIC!
Find a quiet road, start the vehicle and while moving
slowly operate the transmitter. Check that brakes, etc.
all operate as normal. Repeat using all bands, modes,
etc as applicable to your transceiver If all is OK then
3) If in doubt do not disconnect the battery. Take the
vehicle to an authorized service agent and ask them
to connect the transceiver power cables for you.
If the DC cables are not long enough they should only be
extended using an equivalent size and type of cable and
must be capable of handling the specified current and
be well insulated. Always try and route cables so that the
total length is as short as possible.
etc. as applicable to your transceiver. If all is OK, then
increase to normal driving speed and repeat the tests.
If there is any unexpected reaction from the vehicle
(accelerator, transmission, steering or other in-car
electronic device) then stop immediately and seek
assistance from a qualified installation engineer before
operating the transceiver. If all is OK, perform a final
braking test at normal speed while transmitting.
total length is as short as possible.
Connections should be made to the battery terminal
connectors and nowhere else in the vehicle wiring.
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If the vehicle uses a different battery voltage (24 volts,
etc.) then a DC-DC convertor must be used. Never try and
connect to an intermediate point on the battery, etc.,
that appears to measure 12 volts.
Finally stop the vehicle, switch OFF the transceiver and
recheck your installation :
•
Nothing has come loose?
•
No equipment or cable was inconveniently placed
for your driving or your passenger’s safety?
•
Vehicle alarm/immobilizer functions correctly?
•
All vehicle instruments read normally?
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TESTING
Switch on transceiver and check that it functions OK.
Check the antenna matching with a VSWR meter, if
possible, adjust the antenna for a minimum value.
(Don’t forget that doors etc may have an effect on the
measured value!)
WARNING !
If the vehicle and transceiver installation does not pass
every check without problem you should seek expert
assistance.
