Time shared operation of navigational unit

Details Time shared operation of navigational unit Time shared operation of navigational unit

1978-02-08

1980-01-15

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343106R, 343109, G01S 114

Patent

active

041841581

ABSTRACT:
A general aviation navigational receiver is provided with a digital channel selection wherein a channel selection knob on the aircraft control board may be operated to control the functioning of a digitally implemented frequency synthesizer which in turn controls the operation of a voltage controlled oscillator for providing frequency signals to an RF mixer of the unit, the frequency synthesizer being programmed for both possible VOR/LOC and GS channel frequencies wherein switching between frequencies is accomplished in synchronism with the basic clock within the synthesizer greatly reducing transient changeover time.

REFERENCES:
patent: 3386096 (1968-05-01), Lundgreen et al.
patent: 3810181 (1974-05-01), Tierney et al.
patent: 4025923 (1977-05-01), Ferrara et al.

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