Telecommunications – Transmitter and receiver at separate stations – Optimum frequency selection
Patent
1978-12-22
1980-04-08
Safourek, Benedict V.
Telecommunications
Transmitter and receiver at separate stations
Optimum frequency selection
455 67, H04B 1700
Patent
active
041975006
ABSTRACT:
HF and VHF radio channels which are subject to time-varying propagation aalies and to interference are arranged in groups according to frequency band. Within each group are several channels, each spaced sufficiently close so that they experience essentially the same propagation. The several channels in each group are continuously measured to find which channels have the least ambient energy levels, then one of those channels is selected in a random manner to transmit data.
REFERENCES:
patent: 3160813 (1964-12-01), Biggi et al.
patent: 3483472 (1969-12-01), Kinkel
patent: 3983492 (1976-09-01), Fisher
patent: 4013962 (1977-03-01), Beseke
Klein Theodore J.
Krause George E.
Sass Paul F.
Edelberg Nathan
Goldberg Edward
Masinick Michael A.
Murray Jeremiah G.
Safourek Benedict V.
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