Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1980-09-15
1984-03-06
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
364452, G01S 124
Patent
active
044357117
ABSTRACT:
A communications link having a position capability responsive to either a manual or remote control actuation. In one embodiment, a remote carrier has a navigation system for outputting signals representative of the carrier location or position. A frequency shift key (FSK) modulator is connected to the navigation system for tone coding the carrier position signals, a transmitter of a transceiver is connected to the modulator for transmitting the carrier position signals, and a position enable switch for controlling selectively the transmittal of the carrier position signals. In another embodiment, a base station is provided with a control station identification signal (ID) generator, an FSK modulator for tone modulating the station identification signal, and a transmitter connected to the FSK modulator for transmitting the tone modulated carrier ID signal, and a remote station is provided with a receiver mounted upon the carrier for receiving the ID signal, said receiver having a demodulator for demodulating the received carrier identification signals, means for recognizing the ID signal, enabling means for enabling a transmitter, a navigation system outputting position information, an FSK modulator connected to the navigation system for tone modulating the carrier position information, a transmitter for transmitting the position information, and in the base carrier a printer having an FSK demodulator connected to the receiver for demodulating and printing the carrier position information.
REFERENCES:
patent: 3384891 (1968-05-01), Anderson
patent: 3644883 (1972-02-01), Borman et al.
patent: 3721985 (1973-03-01), Perfitt
patent: 3771483 (1973-11-01), Bond
patent: 4112421 (1978-09-01), Freeny, Jr.
patent: 4161730 (1979-07-01), Anderson
patent: 4191958 (1980-03-01), Hulland et al.
patent: 4197538 (1980-04-01), Stocker
Bell Alexander G.
Butcher Bruce A.
Ho Cecil C.
Sharpe Claude A.
Bandy Alva H.
Blum Theodore M.
Merrett N. Rhys
Sharp Melvin
Texas Instruments Incorporated
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