Communications: electrical – Systems – Selsyn type
Patent
1978-06-02
1979-12-25
Waring, Alvin H.
Communications: electrical
Systems
Selsyn type
340167P, 340176, H04B 110
Patent
active
041808045
ABSTRACT:
An FM trap circuit in an amplifier mounted on a roof top antenna is made operable from inside the home by providing a switch on the amplifier which is responsive to the negative half cycle in an A.C. power signal to disable the trap circuit and a switch in the home for selectively sending a full cycle A.C. power signal or a half-wave rectified signal to the amplifier.
REFERENCES:
patent: 3201754 (1965-08-01), Reiner et al.
patent: 3886538 (1975-05-01), Takeuchi
Nakada Minoru
Takeuchi Takeshi
Watanabe Masakatsu
Hochiki Corporation
Waring Alvin H.
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