Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1975-09-12
1977-07-26
Wilbur, Maynard R.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
340 1R, 340 3C, 343 11R, G01S 722, G01S 968
Patent
active
040386546
ABSTRACT:
A plan position indicating system which includes a display screen and means for indicating on the screen the tilt angle of the transmitted beam and received signals to enable measurement not only of direction and distance but also the horizontal and vertical components thereof.
REFERENCES:
patent: 2422697 (1947-06-01), Meacham
patent: 3602877 (1971-08-01), Currie et al.
patent: 3646557 (1972-02-01), Scheer
Fukuoka Itsuo
Iida Masajiro
Morimatsu Hideharu
Yoshida Yoshinari
Berger Richard E.
Furuno Electric Company
Geoffrey, Jr. Eugene E.
Wilbur Maynard R.
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