[Amps] Shorted turns reduce harmonics?

[Mark Marsden]

HI Amp'ers

I measured the response of pi-tank with a VNA this weekend. Thanks to
Steve G8GSQ,  Jos ON4KJ & Hank WV7U for the advice. There is a parasitic
notch that is tuneable by the load control, which can, with luck,
significantly reduce a harmonic.  

FYI the explanation and plots are on
http://granta.digital-crocus.com/Linear_design_notes.php3 , scroll right
down to the end.

73, Mark, G4AXX