Tuning indicator

Details Tuning indicator Tuning indicator

1979-03-26

1980-10-21

Pitts, Harold I.

Pulse or digital communications

Repeaters

Testing

340366R, 455155, H04B 116

Patent

active

042296986

ABSTRACT:
An indicator for displaying RTTY signals in a terminal unit. The terminal unit converts mark and space signals from a radio receiver at audio frequencies to digital pulses for a readout device. Proper tuning of the radio receiver is facilitated by viewing the displayed signals. The readout device converts the digital pulses to alphanumeric characters.

REFERENCES:
patent: 3096400 (1963-07-01), Hutchinson
patent: 3496410 (1970-02-01), MacIntyre
patent: 3544990 (1970-12-01), MacIntyre
patent: 3703630 (1972-11-01), Gelder
patent: 3731203 (1973-05-01), Lieberman
patent: 3745529 (1973-07-01), Engle
patent: 3882399 (1975-05-01), Karpowycz
patent: 3987401 (1976-10-01), Irving
"LM 3914 Dot/Bar Display Driver", National Semiconductor, pp. 1-8, Mar. 1978.
"Tuning", RTTY Handbook, pp. 180-196.
"The RTTY Station", RTTY from A to Z, Durward J. Tucker, pp. 187-199.

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