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2021 WPX CW on 40m EFHW-[Extending a 40m EFHW as an 80 Vertical]

Very casual

The wpx operation was very casual. I spent a lot of the time just tuning around the bands listening. The beginning of a CW contest are always too fast paced for my mediocre CW skills, and taking a mental picture of band conditions was more fun. The bands sounded “brighter” than at any time in the past couple of years.

As a quick-n-dirty mod, I used a second feedpoint to attach the efhw to an 80m folded counterpoise. This is to allow 80m operation by shifting the feedline and using a jumper to bypass the transformer. \/expanded description below\/ This gave the antenna resonance on 3.625Mhz. To drop the resonance into the CW segment I wound a 6 turn coil on a 1.25 inch form. That is inserted at the bypass jumper with faston connectors. To raise the resonance to somewhere near 3.8Mhz a 3kv capacitance of about 500pf does the trick. 80m was good-to-go.

Dirty Tricks Department

So as luck would have it, the good band conditions made testing on 80m less useful than I hoped. 20m was open until at least local midnight (0400Z), and probably was open to somewhere all night. On Friday night few ops moved down as far as 80m with 20m and 40m providing a bottomless pit. It did allow for gathering some info from the RBN spots, which look like either the band was open in famous fashion, or the EfHW was doing a decent job. Maybe a bit […]

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