Communications: radio wave antennas – Antennas – With support for antenna – reflector or director
Reexamination Certificate
2008-01-16
2009-11-17
Cho, James (Department: 2819)
Communications: radio wave antennas
Antennas
With support for antenna, reflector or director
C343S880000
Reexamination Certificate
active
07619583
ABSTRACT:
Maintenance on an amateur radio antenna mounted on a tilt over tower typically requires the use of a ladder of scaffold. While tiltover towers are common, when used with a large yagi antenna they tilting is limited by the length of the antenna boom and elements. The user must still utilize a ladder or scaffold to reach all point on the antenna. The tiltplate address this issue and allow the tower and antenna to be tilted all the way to ground level.
REFERENCES:
patent: 2972891 (1961-02-01), Elliott
patent: 3011586 (1961-12-01), Harvey, Jr.
patent: 5075682 (1991-12-01), Dehnert
patent: 6342870 (2002-01-01), Mehrkens et al.
Cho James
Ludwick Clifford Alvin
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