04539706 is referenced by 122 patents and cites 6 patents.

A mobile vehicular repeater detects the termination of a received transmission from a portable transceiver to be repeated and, in response to such detection, activates the up-link radio transmitter so as to send an acknowledgement signal to the message originating portable transceiver station signifying the probable successful conclusion of a repeating operation. Special techniques are utilized to prevent confusion between such an acknowledgement signal and similar prioritizing transmissions on the up-link frequency.

Title
Mobile vehicular repeater system which provides up-link acknowledgement signal to portable transceiver at end of transceiver transmission
Application Number
6/463587
Publication Number
4539706
Application Date
February 3, 1983
Publication Date
September 3, 1985
Inventor
Hubert A Patterson
Lynchburg
VA, US
David F Mears
Lynchburg
VA, US
Agent
Cushman Darby & Cushman
Assignee
General Electric Company
VA, US
IPC
H04B 7/15
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