Abstract: An economical, compact digital/analog wireless data telemetry system includes either an analog transceiver or a digital packet data (e.g. CDPD) unit coupled with a portable computing device to provide a Mobile Data messaging and location device. The wireless data telemetry system is well suited for use in many possible applications, one application, vehicle location, provides an exemplary embodiment. In broadest terms, the system utilizes a plurality of analog RF channels for transmitting Mobile Data Packet Protocol (MDPP) packets between a tower site controller or remote base and number of mobile data units. The radio links between the tower site and the mobile data units are full duplex analog RF data transmission links utilizing full duplex receivers and transmitters at each installation. The operation of the combination of elements is the novel focus of the present invention.

Abstract: An economical, compact wireless data telemetry system 100 includes a transceiver 117 coupled with a portable computing device 118 to provide a mobile data messaging and location information delivery system. The wireless data telemetry system 100 is well suited for use in many possible applications, one application, vehicle location, provides an exemplary embodiment. In broadest terms, the system utilizes a plurality of analog RF channels for transmitting Mobile Data Packet Protocol (MDPP) packets between a tower site controller or remote base 124 and number of mobile data units 117. The radio links between the tower site 124 and the mobile data units 117 are full duplex analog RF data transmission links utilizing full duplex receivers and transmitters at each installation. The operation of the combination of elements is the novel focus of the present invention.