[FedCom] GPS / Bird Dog question

[KD7JYK]

An agency my wife worked for had a combination GPS\Data Radio\Cell Phone.
These devices would be attached to a car and whenever a car moved, it would
transmit its location at intervals as well as place a call to agents that
could be receive on their phones or pagers.  The unit was small, perhaps no
larger than a couple of packs of cigarettes, so radio range was very limited
as the unit was designed to conserve power in tracking mode.  Range was also
limited by location of the device, usually mounted out of sight under a
vehicle.

Kurt