Quad Building - VHFUHF Forum at eHam.net

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eHam.net Forum : VHFUHF : Quad Building

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Quad Building	Reply
by KO1D on October 19, 2009	Mail this to a friend!
OK so building a monoband quad is straight forward; been there done that got the t-shirt. Building a multi-band is maybe not so straight forward? I am looking at building a 6-2-440 (maybe including 10m and/or 220 on it as well) quad for use at home. I am thinking 4 elements on 6 may be my max length. That should give me an average and totally acceptable to the XYL antenna on the roof. It'd also give me plenty to work with on 2 and 440 for some rather elementary and entry level weak signal work. Materials would be 12 or 14 g wire and PVC. Feedlines would depend on the budget but ideally LMR 400 or 9913 on the high bands and maybe for 6m cheap out with RG 8 until more cashola appears. I am thinking all the pig tails would be RG58 size cabling cut long enough to allow the rotor to do its job. I would then barrel connect from the pig tails into the primary cable back to the station in the garage 2 floors below. What I am wondering is when I am drawing this up on paper what interaction is there when going from a mono- to multi-band quad that I have to worry about? I realize that testing once erect is a must but I'd rather not end up short of wire by a foot and rebuilding it or vice-versa if possible. Trimming an inch or two would suffice tyvm :0) Also if there are issues combining any of the above bands into a single quad please let me know as well. I can always adjust as necessary. Thanks in advance.

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