Mobile service radio system for millimetre wave range - transmits live telegrams to series of transponders and back to central station

摘要

Telegrams are transmitted from a line central station through a cable to a first transfer transponder of a first chain system. Starting from the first transfer transponder the telegram is transmitted by radio on the same frequency by TDM through a life transponder to a second transfer transponder. Each live transponder receives telegrams from at least two preceding transponders and transmits only one telegram at a specified time. Telegrams from the second transfer transponder are transmitted over a cable back to the central station and they are compared with the telegram sent to the first transfer transponder.