Radio receiver employing premixing and digital display

Details Radio receiver employing premixing and digital display Radio receiver employing premixing and digital display

1977-06-07

1979-08-07

Bookbinder, Marc E.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 78D, 325455, 331 64, H04B 116, H04B 126

Patent

active

041639430

ABSTRACT:
A short wave broadcasting receiver which can receive accurately and stably the desired station is formed with a local oscillator which comprises a variable frequency oscillator, reference frequency oscillators, premixers and band pass filters, frequency converter and an 1F amplifier. By adding a frequency counter unit comprising a frequency counter block and digital display block, the received frequency can be digitally displayed stably and correctly by using a cheap low speed frequency counter.

REFERENCES:
patent: 2679005 (1954-05-01), Bataille et al.
patent: 3244983 (1966-04-01), Ertman
patent: 3248652 (1966-04-01), Kruse
patent: 3361976 (1968-01-01), Konian
patent: 3593153 (1971-07-01), Maitland et al.
patent: 3701951 (1972-10-01), Krausser
patent: 3753119 (1973-08-01), Close
patent: 3938048 (1976-02-01), Elliott
patent: 3991382 (1976-11-01), Iida
patent: 4065727 (1977-12-01), Johnson, Sr.
patent: 4114101 (1978-09-01), Sekiguchi

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