Telecommunications – Receiver or analog modulated signal frequency converter – With wave collector
Patent
1974-10-08
1981-09-01
Safourek, Benedict V.
Telecommunications
Receiver or analog modulated signal frequency converter
With wave collector
455307, 333176, 333178, H03H 500
Patent
active
042876028
ABSTRACT:
A two terminal electronic filter network is provided for connection across TV antenna input terminals to reduce interference from noncommercial FM radio stations operating within a frequency band near the TV channel 6 frequency band. The two terminal electronic filter circuit which exhibits a rapid change of reactance for changes in frequency, and having a resonant frequency provides sufficient FM signal rejection without significant attenuation of any VHF channel by the provision of a highly reactive network tuned below the resonant frequency of the filter network as a whole.
REFERENCES:
patent: 1869870 (1932-08-01), Stevenson
patent: 2258974 (1941-10-01), Dagnall
patent: 2636085 (1953-04-01), Boothby et al.
patent: 2708238 (1955-05-01), Silverman
patent: 2815441 (1957-12-01), Silverman
patent: 3560894 (1971-02-01), Fettweis
patent: 3733608 (1973-05-01), McGhay et al.
Television Engineering Handbook-Fink McGraw-Hill, 1957.
Corporation For Public Broadcasting
Safourek Benedict V.
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