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I got a chance last night to do a quick and dirty test using a wire length for 80 meters. I didn't get time to fine-tune, but with a modest counterpoise was seeing less than a 2 SWR in the general vicinity of the 80, 40, and 20 meter bands. SWR climbs after 20, so I may need to "tweak" the box design a bit. Captain Kilowatt mentioned 2 220PF caps in series, which is something I haven't seen in any of the schematics I've found online. May give that a try with a 2-turn primary.

[QUOTE="DTB Radio, post: 742546, member: 754"] I got a chance last night to do a quick and dirty test using a wire length for 80 meters. I didn't get time to fine-tune, but with a modest counterpoise was seeing less than a 2 SWR in the general vicinity of the 80, 40, and 20 meter bands. SWR climbs after 20, so I may need to "tweak" the box design a bit. Captain Kilowatt mentioned 2 220PF caps in series, which is something I haven't seen in any of the schematics I've found online. May give that a try with a 2-turn primary. [/QUOTE]

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