Frequency scanning apparatus wherein a single knob controls both

Details Frequency scanning apparatus wherein a single knob controls both Frequency scanning apparatus wherein a single knob controls both

1980-06-05

1983-09-13

Grimm, Siegfried H.

Oscillators

With indicator, signal, or alarm

328 14, 331179, 455165, 455185, H03B 100

Patent

active

044045310

ABSTRACT:
A scan rate switch is interfaced to a microprocessor which controls a digitally programmed frequency synthesizer. The scan rate switch includes a plurality of different increment or decrement (frequency steps) positions with the apparatus changing the frequency at a fixed rate of five steps per second for as long as the switch is in any of the positions.

REFERENCES:
patent: 3665323 (1972-05-01), Peterson
patent: 3803494 (1974-04-01), Howell et al.
patent: 4086544 (1978-04-01), Fried
patent: 4270117 (1981-05-01), Ziegelbein et al.

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