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43D1 |
Quad Details | ||
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Spacing between elements Director - Driven el = 74 inches Driven el - Reflector = 83inches Tower Pole is positioned between Reflector and driven element. Wire Type is AWG 18 and has a solid core diameter of about 1.0 mm. copper wire. Boom length is 13 feet (4 metres) and is 3inch (75mm) aluminium tubing.
Spreaders 25mm rigid PVC pipe onto 1inch(25mm) right angle aluminium. Spreader Lengths Director = 4 x 72 inches Driven el = 4 x 76 inches Reflector = 4 x 80 inches.
Tuning tip use of a Grid Dip Oscillator or Antenna Analyser will indicate if the quad is resonant at the design frequency. The antenna will perform best when resonant!
Built in 1992. |
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Gamma Match Information
RG213 coax via PL259 and right angle adaptor screwed onto an SO239 socket mounted on an aluminium 35mm film canister. Weatherproofed with silastic sealing compound. 50pf cylindrical adjustable tuning capacitor in parallel with a 50pf capacitor. The cap of the film canister connects to the midpoint of the driven element and the gamma wire is approximately 18 inches (450mm) long. Click on the pics for larger view No Hubs used here ! Closer here.
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Quad Gain info from the book
'All About Cubical Quad Antennas' |
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Much quad info is
available at the Signal Engineering site Another U.S. Quad Site is
Cubex Quads |
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