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Same frequency repeater for a multiple repeater system

  • US 4,479,245 A
  • Filed: 12/21/1982
  • Issued: 10/23/1984
  • Est. Priority Date: 12/21/1982
  • Status: Expired due to Fees
First Claim
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1. A same frequency repeater comprising:

  • (a) a receiver for receiving a signal carrying information at a given frequency;

    (b) a transmitter for transmitting an output signal carrying said information at said given frequency;

    (c) means for sensing the magnitude of said received signal;

    (d) means for keying said transmitter in response to said receiver receiving said signal, said keying means delaying the keying of said transmitter from the time that said receiver receives said signal for a time period having a duration inversely proportional to the magnitude of said received signal as sensed by said sensing means(e) means coupled to said receiver for detecting if a predetermined pilot signal is carried by said received signal;

    (f) means for encoding said output signal of the transmitter with said predetermined pilot signal; and

    (g) means for unkeying said transmitter for a randomly selected time period in response to said detecting means detecting said pilot signal while said transmitter is keyed.

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