Patent ID: 7729684

Claim:
A portable GPS/radio unit capable of communicating with at least one other portable GPS/radio unit over a Family Radio Service (FRS) network, the GPS/radio unit comprising: a GPS receiver for receiving satellite signals from a plurality of satellites; a processor coupled with the GPS receiver for calculating a location of the GPS/radio unit as a function of the satellite signals; a radio FRS transceiver coupled with the processor and operable for— transmitting voice communications to and receiving voice communications from the other GPS/radio unit, and transmitting a radio signal to the other GPS/radio unit indicative of the location of the GPS/radio unit and receiving from the other GPS/radio unit a radio signal indicative of a location of the other GPS/radio unit; and an input device coupled with the radio transceiver for initiating transmission of a radio signal including a polling request to the other GPS/radio unit requesting that the other GPS/radio unit transmit a radio signal indicative of the location of the other GPS/radio unit; wherein the radio signal indicative of the location of the GPS/radio unit is transmitted after the push-to-talk button has been pushed and released so that the radio signal indicative of the location of the GPS/radio unit is transmitted after transmission of the voice communications.