Re: [IRCA] Station #500! (Big Loop antennas)

[Chuck Hutton <charlesh3@xxxxxxx>]

For those interested, http://w8ji.com/k9ay_flag_pennant_ewe.htm has a paragraph describing the fact that the pickup for K9AY  and other "terminated loops" depends solely on the "vertical" aspect of the slanted wires and no pickup is contributed by the horizontal section on the bottom. Area of the antenna (as referenced in the article below) is therefore meaningless.
Chuck

From: charlesh3@xxxxxxx
To: irca@xxxxxxxxxxxxxxxx
Subject: RE: [IRCA] Station #500! (Big Loop antennas)
Date: Sat, 18 Apr 2015 20:11:26 +0000




Guy - 
The John Bryant article is only about KAZ antennas and doesn't touch the DKAZ version.I have some issues with the article - using a "surface area" concept to compare antennas whose gain is largely dependent only on the height of the vertical sections is not right.
Chuck

> From: dx@xxxxxxxxxxxxx
> Date: Sat, 18 Apr 2015 13:03:33 -0700
> To: irca@xxxxxxxxxxxxxxxx
> Subject: Re: [IRCA] Station #500! (Big Loop antennas)
> 
> Hi Nick,
> 
> John's article on large DKAZ antennas is the one that came to mind for me
> in this discussion of Super Loops. Although I believe a Super Loop is
> rectangular, the big DKAZ may be of interest to Brian:
> 
> http://www.dxing.info/equipment/kaz_bryant.dx
> 
> John compared 112 Ft. X 28 Ft.and 40 Ft. X 10 Ft. DKAZ antennas for this
> article.
> 
> 73,
> 
> Guy Atkins
> Puyallup, WA
> 
> 
> 
> 
> > ---------- Forwarded message ----------
> > From: Nick Hall-Patch <nhp@xxxxxxxx>
> > To: Mailing list for the International Radio Club of America <
> > irca@xxxxxxxxxxxxxxxx>
> > Cc:
> > Date: Sat, 18 Apr 2015 15:46:32 +0000
> > Subject: Re: [IRCA] Station #500!
> > Too big?   Never say that.
> >
> > John Bryant ran some supersized Ewe antennas, for example 70 feet high by
> > 100 feet horizontal at Orcas Island, but it suffered from grounding
> > difficulties insofar as nulling was concerned compared with a Wellbrook
> > array.  I can't find any reference that he ever tried it as a Superloop..
> >
> > When he ran one closer in size to what you're doing in Oklahoma (27' high
> > by 100' horizontal) over a good ground, he was suitably impressed, so I
> > suspect the loop version will do you fine.
> >
> > This is based on e-mails exchanged.  I can't find any formal articles, at
> > least with a brief search.  Seems odd, as John was a great documenter..
> >  Perhaps someone else can point us in the direction of a formal article..
> >
> > At any rate, I'd say that you should run with the big 'un.   It might be
> > good to run a smaller one too if you can, as my own experience with a
> > larger one was that the nulls weren't as good as a smaller one, but that
> > was queered by being on a city lot, and one end of the Superloop being very
> > close to the house and its electrical wiring.
> >
> > best wishes,
> >
> > Nick
> >
> >
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