marxy's musing on technology

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Simple QRP end fed antenna tuner - take 2

Posted: 25 Jan 2021 06:58 PM PST
http://blog.marxy.org/2021/01/simple...er-take-2.html

I've had another shot at the simple end fed half wave tuner and it's even
better than yesterday's effort. The 12 way switch selects the input tap on
the toroid and the wiring is quite neat as the toroid sits right on the
back of the switch.Here's the very simple circuit.There are three turns on
the earth end of the toroid, then twelve turns with a tap going out to the
switch on each turn. There