R. L. Drake Company

Ronald E Wysong

Raymond L Midkiff

Merl Powell

Michael D Valentine

Steven C Koogler

Varn Richard Frank

Stephen C Koogler

Joe E Shafer

Control panel for satellite television system

Satellite radio receiver

A single-sideband radiotelephone system includes a single-sideband transmitter which initially broadcasts two frequency-spaced tones simultaneously for a predetermined time interval, and thereafter broadcasts the two tones alternately in a unique code pattern to access a predetermined receiver. Each single-sideband receiver in the system includes a pair of detectors each having a narrow bandpass, the center frequencies of which are spaced apart by the difference in frequency of the transmitted tones. The center frequencies of the detectors are simultaneously varied relative to the initial two-tone broadcast while maintaining the frequency differential therebetween; and simultaneous detection of both tones will terminate the frequency varying mode of operation. The subsequently transmitted unique code pattern is then sensed by the detectors, the code pattern decoded, and the selected receiver is enabled to receive any subsequently broadcasted information.

Single-sideband radiotelephone system

Growing community of inventors

Centerville, OH, United States of America

Ronald E Wysong