Electricity: motive power systems – Positional servo systems – Digital or numerical systems
Patent
1977-01-13
1978-02-28
Dobeck, B.
Electricity: motive power systems
Positional servo systems
Digital or numerical systems
318672, 318673, 318675, G05B 1930
Patent
active
040770001
ABSTRACT:
A system for selectively aiming a directional receiving antenna in one of a plurality of different directions respectively associated with a plurality of broadcast transmitters differently located in azimuth relative to the antenna in response to the entry into a digital keyboard of the different identification numbers assigned to the different transmitters.
REFERENCES:
patent: 3456173 (1969-07-01), Funfstuck
patent: 3571686 (1971-03-01), Henegar
patent: 3826964 (1974-07-01), Byrne
patent: 3962620 (1976-06-01), Dion
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