Programmable frequency scanning radio system

Details Programmable frequency scanning radio system Programmable frequency scanning radio system

1977-04-25

1980-06-10

Bookbinder, Marc E.

Telecommunications

Transmitter and receiver at same station

With tuning

455165, H04B 132

Patent

active

042075220

ABSTRACT:
A frequency scanning radio system and programming means for selecting the frequencies to be used, and to determne whether or not the channels are in use. The programming means controls not only the direction but also the speed of the frequency scanning in addition to the frequencies monitored. The system further displays the frequency which is being monitored, whether selected by the programming means or selected manually. A further feature is an automatic shifting of frequency when the radio is transmitting into a repeater station.

REFERENCES:
patent: 3651469 (1972-03-01), Keese
patent: 3758853 (1973-09-01), Dionne et al.
patent: 3803494 (1974-04-01), Howell et al.
patent: 3864637 (1975-02-01), Kanow
patent: 3944925 (1976-03-01), De Laune
patent: 3950702 (1976-04-01), Saikaishi et al.
patent: 3961261 (1976-06-01), Pflasterer
patent: 3968440 (1976-07-01), Ehni
patent: 3983484 (1976-09-01), Hodama
patent: 4008436 (1977-02-01), Fujita
patent: 4011515 (1977-03-01), Hanson
patent: 4013957 (1977-03-01), Tojo
patent: 4048570 (1977-09-01), Sumi
patent: 4092594 (1978-05-01), Baker
Heath's Digital F-M Tuner--David M. Thomas, May 1973--Radio Electronics, pp. 42-50, 98.

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