EXPERIMENTAL FM MULTIPLEXING TRANSPONDER SYSTEM FOR REMOTE RADIO CONTROL AND TELEMETERING.
Final rept. 1 Jul 66-27 Jul 67,
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF
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An experimental FM multiplexing transponder system was designed to trigger the ventilation closure valves of protective shelters as soon as the overpressure produced by a nuclear blast is detected by a pressure transducer. The system would provide complete protection for shelters located 12,000 feet or more from the target. The system consists of five FM multiplexing transponders transmitting five channels of FM data to the central receiver, one channel at a time, with each transponder initiating the next transponder transmission. Only one carrier frequency is used regardless of the number of transmitters also, since the transponders transmit data only on interrogation, battery life is greatly increased. The flexibility of this battery powered system, its ability to accept a wide variety of emergency inputs, its fail-safe design, and its low cost make it suitable for a wide variety of data transmission applications. Author
- Radio Communications