AM radio receiver with improved tracking

Details AM radio receiver with improved tracking AM radio receiver with improved tracking

1990-10-30

1993-04-13

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

4551641, 4551851, 4551921, H04B 116

Patent

active

052030318

ABSTRACT:
An AM radio receiver includes an automatic tuning circuit for setting an automatic tuning mode. A radio frequency circuit produces a tuned signal and an untuned signal. A selector receives the tuned signal and untuned signal, and selects the tuned signal when the automatic tuning mode is set, and selects the untuned signal when the automatic tuning mode is not set. An intermediate frequency signal generator produces an intermediate frequency signal based on the selected signal.

REFERENCES:
patent: 4405947 (1983-09-01), Tults et al.
patent: 4422096 (1983-12-01), Henderson
patent: 4426734 (1984-01-01), Tults et al.
patent: 4575761 (1986-03-01), Carlson et al.
patent: 4776038 (1988-10-01), Testin et al.

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