Radio receiver

Details Radio receiver Radio receiver

1980-04-25

1982-11-02

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455254, H03J 718

Patent

active

043577121

ABSTRACT:
In a radio receiver provided with an automatic tuning circuit, a tuning sensitivity adjusting circuit comprises a buffer which extracts a signal received partially-processed from the radio circuit without substantially affecting the audio output, and a change-over circuit which receives the signal from the extracting means, selectively attenuates the signal, and supplies the signal to the automatic tuning circuit as a signal to lock the tuning circuit to a desired frequency.

REFERENCES:
patent: 2572926 (1951-10-01), Gull
patent: 2731556 (1956-01-01), Wiley
patent: 2977467 (1961-03-01), Black
patent: 3531724 (1970-09-01), Fathauer
patent: 3571724 (1971-03-01), Borg
patent: 3794925 (1974-02-01), Imazeki
patent: 3855535 (1974-12-01), Marsh, Jr.
patent: 4156196 (1979-05-01), Someno et al.

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