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I found a 50 foot roll of 1/4" on eBay for under 30 bucks. It was more expensive at home depot. You probably wont need to use all the turns unless you get on 160. My vac variable is only 350pf but it's plenty for 80 meters.


I didn't use the variable cap on the input link so the center conductor is at DC ground. I made some inductors (basically plate chokes) to ground each leg of the ladder line.