The starting point for this antenna is a stock whip antenna. Some soldering iron work and a cardboard jig to get the angles right can convert that whip into a cloverleaf. You can see the whole ...
[David] wasn’t completely unprepared, as he did have the loading coil for his portable 20 m antenna, but was missing the telescoping whip. He calculated the whip length should be around 20 cm ...
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