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GPS based search and rescue transceiver

  • US 6,011,510 A
  • Filed: 06/17/1997
  • Issued: 01/04/2000
  • Est. Priority Date: 06/17/1997
  • Status: Expired due to Term
First Claim
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1. A survival radio, comprising:

  • a GPS module for receiving GPS signals and for generating GPS location information;

    a microcontroller comprising a microprocessor, first memory containing program information for operation of said microprocessor and a first predetermined identification code for specifically identifying said survival radio and second memory containing data for operation of said survival radio said data including said GPS location information; and

    a transceiver for providing Line of Sight (LOS) communications; and

    whereby said microcontroller is programmed such that upon receipt by said transceiver of an interrogation message including said first predetermined identification code, said microcontroller obtains said GPS location information and generates an encoded data message in a predetermined format and a predetermined length which is supplied to said transceiver and said transceiver operates to transmit said encoded message, wherein said transceiver transmits and receives message data in an audio band utilizing minimum phase shift-keying.

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