The original design of the antenna for a range of 2 m. Scheme, description

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The original design of the antenna for a range of 2 meters. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / VHF antennas

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American radio amateur Lee Avrik, W1SE proposed an original design of a five-element "beam" using quarter-wave elements (Fig. 1). In this design, it became possible to directly connect the lower ends of the elements to the carrier beam.

The original design of the antenna for a range of 2 meters
Ris.1

The antenna is attached to the mast in the middle of the traverse. The gamma-matching device capacitor is protected from moisture by placing it in a plastic case from 35 mm film. One of its outputs is connected to the vertical conductor of the gamma-matcher at a distance of 50 mm from the traverse, and the second one is connected to the central output of the coaxial connector, the body of which is electrically connected to the traverse in close proximity to the vibrator attachment point. The conductor of the gamma matcher itself, 250 mm long, is located at a distance of 50 mm from the vibrator.

According to W1 SE, such an antenna works more efficiently than a collinear 2x5/8 l.

Author: Lee Avrik, W1SE; Publication: N. Bolshakov, rf.atnn.ru

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