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Mobile multifrequency transmitter transmitting on frequencies based on geographic locations and a method thereof

  • US 7,705,777 B2
  • Filed: 11/22/2006
  • Issued: 04/27/2010
  • Est. Priority Date: 03/30/2001
  • Status: Expired due to Term
First Claim
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1. A mobile multifrequency transmitter, comprising:

  • a self-locator configured to determine a current self location without transmitting an outgoing signal, and to provide the current self location to a frequency selector;

    the frequency selector configured to select a usable frequency based on said current self location;

    a timer configured to generate a wake-up event; and

    a communication unit configured to transmit on said selected usable frequency in response to the wake-up event generated by the timer.

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