Radio frequency transmission system

Details Radio frequency transmission system Radio frequency transmission system

1979-12-31

1982-01-19

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 80, 375103, 455 29, 455 42, H04L 706

Patent

active

043120725

ABSTRACT:
Radio transmission system in which the carrier frequency oscillator at the transmitter is wobbulated by varying its frequency in a periodic manner and modulated and transmitted to a receiving site where the detected signal is passed through two separate paths, one being supplied to a converter and the other is supplied to the converter through a delay line. The output of the converter comprises an intermediate frequency which contains the modulation which is then demodulated and detected. Modification of the invention provides for transmitting two or more separate intelligences on the carrier and detecting the two intelligences at the receiver.

REFERENCES:
patent: 2833857 (1958-05-01), Robin
patent: 3387220 (1968-06-01), Lender
patent: 3484693 (1969-12-01), Fong
patent: 3679983 (1972-07-01), Theriot
patent: 4064361 (1977-12-01), Kustka
patent: 4209750 (1980-06-01), Freitas

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