1184[infoguys-list] Re: HELP
- Feb 1, 2000Not all GPS units work alike. Some use a store and forward system others use
a steady on. The GPS signal is not what your looking for. Look for the
( i.e., GPS in, Carrier signal out). Depends on what the unit maker is using.
The most common is cellular. Cellular detection gear would find this.
Our Unit, MobyTRAC, can use almost any band you got, Cellular UHF, VHF
etc. The unit size also varies. MobyTRAC is the size of a car radio. Look for
the GPS antenna. It may be under the dash if factory installed and hence hard
to find. We have done covert installs and hidden the antenna in the tail
lights and under the dash. GPS antenna should be 3 feet away from carrier
antenna to cut interference. I would look for wiring that is not factory
type, but nothing is certain. If this vehicle is employer owned don't fool
with it. These things are expensive and if the signal fails, the boss would
know what time it failed and who was assigned to drive.
Many clients have asked for a unit to be mounted in an exterior box held
underneath by magnets with a battery power source. It can be done but would
run for only a couple of days. MobyTEL will not warrant such an install and
doesn't recommend doing it.
As to Battery interruption... The unit in my van is plugged in to the
cigarette lighter. power interruption in this case is not affecting the
John P. Hilderbrand, Sr.
Potomac Private Investigations
and Authorized Distributor of MobyTEL products
North Bethesda, MD
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