04578815 is referenced by 144 patents and cites 10 patents.

A wide area coverage radio communication system of the type adapted to relay a message substantially simultaneously from a plurality of fixed location sites to a plurality of portable or mobile units includes a plurality of repeaters at each of the sites. Each of the repeaters is arranged to transmit and receive on a respective different frequency duplex pair or channel. Control means at one of the sites senses channel availability at all of the sites and causes one repeater at each of the sites to transmit the message on its respective different frequency. Access to the system by the portable units is provided on a trunked basis through the control means.

Title
Wide area coverage radio communication system and method
Application Number
6/559122
Publication Number
4578815
Application Date
December 7, 1983
Publication Date
March 25, 1986
Inventor
Gary W Persinotti
Dallas
TX, US
Agent
Raymond A Jenski
Donald B Southard
Edward M Roney
Assignee
Motorola
IL, US
IPC
H04B 7/26
H04B 7/155
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