Total posts : 45366
“Question for RFB, your suggestion of using a variable cap “across” (in parallel with) the coil(s) would make that a parallel resonant circuit which is an open at resonance. Should not the cap be wired in series?”
In series I found the loss greater and tuning too wide. The small inductors were used due to wind loading issues of a large box containing a larger loading coil. Out here where winds average 40mph gusting up to 70+..wind loading becomes a very big concern.
RFB
