Topband: 4SQ vs. 8 circle rcv

Tim Shoppa tshoppa at
Wed Jan 13 13:25:19 EST 2016

I have used the W3LPL 8-circle in a TBDC (a TBDC that was 99% domestic
stuff). The 8-circle is surprisingly directive. Almost all strong signals
just drop down into the noise if you are two notches off from the best

Now the 8-circle gets a big number for RDF rating, but I don't think the
RDF number fully captures how directive it is and how deep and wide the
null is, in any other but the chosen direction.

I was using Frank's beverages as on the second radio much of the time. In
comparison the beverages seemed pretty much omnidirectional. Don't take
that as anything bad about beverages, just take that as a sharp contrast to
the deep null you get for 270 degrees with a well-installed 8-circle.

Tim N3QE

On Wed, Jan 13, 2016 at 9:56 AM, Mike Waters <mikewate at> wrote:

> According to what I read there, there is little difference between the two.
> That seems odd. Was some information left out, or did I read the wrong
> .pptx file?
> 73, Mike
> On Wed, Jan 13, 2016 at 1:23 AM, Bill Hider <n3rr at> wrote:
> > This presentation is titled:  "Receiving Antennas" ... :
> >
> >
> >
> > This presentation answers all of  your stated questions and more.
> >
> _________________
> Topband Reflector Archives -

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