×

MOBILE RADIO EXTENSION INTERFACE FOR CONVERTING CONVENTIONAL TRANSMIT/RECEIVE TO A REPEATER

  • US 3,745,462 A
  • Filed: 01/20/1972
  • Issued: 07/10/1973
  • Est. Priority Date: 01/20/1972
  • Status: Expired due to Term
First Claim
Patent Images

1. Apparatus connectable to a first transmitter and a first receiver for converting said first transmitter and first receiver for use as a repeater in response to a signal from a station attempting to seize the repeater comprising second receiver means for receiving a signal on a frequency different from the receiving frequency of said first receiver, interfacing means responsive to a control signal for interfacing said first transmitter and said second receiver means and for energizing said first transmitter, first detector means connected to said first receiver for providing a first signal when a signal is received by said first receiver, first transmitter keying means connected to said second receiver means for providing a first transmitter keying signal in response to said signal from a station attempting to seize the repeater received by said second receiver, means for generating a signal occurring a random time after said first transmitter keying signal, and control signal generating means connected to said first detector means, said first transmitter keying means, said delay signal means and said interfacing means for continuously applying a control signal to said interfacing means during the presence of said first transmitter keying signal subsequent to the coincidence in said control signal generator means of said first transmitter keying signal and said delay signal in the absence of said first signal whereby signals received by said second receiver means are repeated by said first transmitter.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×