Patent ID: 8060085

Claim:
A method for communicating location information for a radio unit, the method comprising: placing said radio unit in a first tracking mode; in response to the placement of said radio unit in said first tracking mode, performing by the radio unit the following operations comprising acquiring first location information at a first sample rate, and automatically and periodically transmitting said first location information from the radio unit to an external device based on a first transmission rate; detecting a depression of a PTT button by a user of said radio unit; transitioning said radio unit from said first tracking mode to a second tracking mode in response to said detection of said depression of said PTT button; and in response to the transition to the said second tracking mode, performing by the radio unit the following operations comprising acquiring second location information at a second sample rate that is different from said first sample rate, storing said second location information in a data store of the radio unit based on said second sample rate, and retrieving said second location information from said data store exclusively upon request from a user of said radio unit or said external device.