[RFI] Shielded vs unshielded loops - difference

David Cole dave at nk7z.net
Sat Mar 29 01:48:26 EDT 2014


Tom,

Why #43, would not #31 be better?  If I understand what you are doing,
you are removing Common Mode to help the pattern be sharper, is that
correct?
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On Fri, 2014-03-28 at 23:41 -0600, Tom Thompson wrote:
> Ken,
> 
> The balun is just several turns of the coax through the #43 ferrite core 
> material.
> 
> Tom
> 
> On 3/28/2014 10:45 PM, Kenneth G. Gordon wrote:
> > On 28 Mar 2014 at 22:08, Tom Thompson wrote:
> >
> >> Several of you have shown interest in the loop  antenna.  I have updated
> >> my web page to show more details.  If you have it cached, you may have
> >> to refresh it.  The URL is:
> >> http://tomthompson.com/radio/ReceivingLoop/loop.html
> >>
> >> Let me know if some of it is unclear.
> > Tom:
> >
> > Please explain the details of the balun you use between the coax and the
> > coupling loop.
> >
> > Ken W7EKB
> >
> 
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