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My Primary Coil Consists of about 10 turns of quarter-inch Cu tubing. It is based off Greg Hunter's flat spiral primary coil. I was worried about only having ten turns, but so far, I haven't needed any more. The struts are 1" PVC. The coil is held down by wire-ties. The inner end is terminated by sticking the 1/4" Cu into a 3/8" Cu pipe, and runing that to the lower deck. The other end is a modified alligator clip, bent just right.
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