Radio station identifier

Details Radio station identifier Radio station identifier

1975-10-14

1977-01-11

Woodiel, Donald O.

Signals and indicators

Horns, whistles and compressional wave generators

Manually actuated air compressor

G09F 940

Patent

active

040021408

ABSTRACT:
A look-up device formed in the manner of a rectangular envelope open at the ends for sliding receipt of a rectangular slide on the interior thereof. Formed in the envelope is a rectangular window including radio frequency inscriptions along the longitudinal edges thereof. The slide is translated within the envelope to align one edge thereof against a selected frequency, and the corresponding call letters printed on the face of the slide are then aligned with one edge of the envelope.

REFERENCES:
patent: 2290822 (1942-07-01), Basso
patent: 2903808 (1959-09-01), Anderson
patent: 3650467 (1972-03-01), Sellie
patent: 3790074 (1974-02-01), Zemanek
patent: 3853265 (1974-12-01), Kunert

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