Re: 20 meter QCX-- 1/2 watt output

M0RON
 

Although not qcx, I had problems with the 20m lpf in the u3s, I'd built 3 boards for 20m, everyone was down on expected output power. The solution was to leave the inductors as they were and replace the 390pf capacitors for c0g types sourced from a uk supplier.
andy
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