Field convertible NTSC/HDTV broadcast antennas

Details Field convertible NTSC/HDTV broadcast antennas Field convertible NTSC/HDTV broadcast antennas

1993-09-17

1996-04-02

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Convertible to different antennas

343853, 343876, 343891, 343895, 343725, H01Q 2128

Patent

active

055044956

ABSTRACT:
A convertible antenna system for enabling immediate installation of an antenna for continuing the broadcasting of conventional signals in the currently available channel ranges, but which allows for eventual convertibility to HDTV (high definition television) operation. Thus, field convertibility adjustments or modifications are made to the initially installed system after the point in time at which a channel has been assigned for HDTV broadcasting. Such channel assignment is in one of a number of possible frequency spectrum locations such as a channel adjacent to the conventional broadcast channel, or a significantly removed VHF channel, or even a UHF channel. The field adjustments can simply involve coupling or decoupling lines and associated components, or can include replacing an antenna portion.

REFERENCES:
patent: 2127336 (1938-08-01), Leng
patent: 2149333 (1939-03-01), Brown
patent: 2496242 (1950-01-01), Bradley
patent: 2771606 (1956-11-01), Kandoian
patent: 2867804 (1959-01-01), Gihring
patent: 4011567 (1977-03-01), Ben-Dov

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