Re: [IRCA] [NRC-AM] Hand capacitance issues

[Russ Edmunds <wb2bjh@xxxxxxxxx>]

I've always mounted the tuning cap outside of the coil - immediately outside it at the end of one of the arms. That reduces or eliminates the issue.


Russ Edmunds
15 mi NNW of Philadelphia  
Grid FN20id
<wb2bjh@xxxxxxxxx>
FM: Yamaha T-80 & Onkyo T-450RDS w/ APS9B @15'; Grundig G8
AM:  Modified Sony ICF 2010's barefoot


--- On Wed, 4/11/12, Mike Westfall, Lost Almost NM <mwdx@xxxxxxxxxx> wrote:

> From: Mike Westfall, Lost Almost NM <mwdx@xxxxxxxxxx>
> Subject: [NRC-AM] Hand capacitance issues
> To: ABDX@xxxxxxxxxxxxxxx, "Mailing list for the International Radio Club of America" <irca@xxxxxxxxxxxxxxxx>, am@xxxxxxxxxxx
> Date: Wednesday, April 11, 2012, 10:36 PM
> 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
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