Try using a non-conductive tuning shaft extension (nylon, plastic, phenolic/fiber). This has worked well with LC oscillators and TX output PA tuning networks. Also use a non-conductive knob.
Alex ________________________________ From: "Mike Westfall, Lost Almost NM" <[email protected]> To: [email protected]; Mailing list for the International Radio Club of America <[email protected]>; [email protected] Sent: Wednesday, April 11, 2012 7:36 PM Subject: [IRCA] Hand capacitance issues Those of you that have built loop antennas, what have you done to mitigate hand capacitance effect when turning the varicap? I just built me a quick 2 foot loop, and I notice that when I reach in to tune the loop, it changes the tuned frequency a little. -- Mike Westfall, Los Alamos, NM http://www.facebook.com/mesamike My MWDX stuff: http://mesamike.org/radio/mwdx Online logbooks: http://dxlogbook.gentoo.net Reception Report & QSL Manager for KRSN _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected] _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
