If there is anyone in the Pipe Creek area who can help with the tower hole,
I'll have a 5-6 el quad up asap after the concrete is dry. Can't get the
hold deeper because of the rocks.
Mike, k5wmg
Pipe Creek, Texas
Green cars, slow boats, big dogs, old trucks, little radios, and summers off
to write
On Tue, Nov 9, 2010 at 7:48 AM, Glen <k4kv@mds-ham.com> wrote:
> Hello,
>
> After my 4th quad in 40 years, this last one covers from 30M to 6M.
>
> It is a spider type design, with optimum element spacing.
>
> I found with this last one, with all the WARC bands, it seems to lower the
> impedance.
> I found them closer to 70 ohms not 90, and removed all the matching
> sections. I used a tower
> mounted coaxial switch. The match is quite good without matching sections.
>
> 73's
>
> Glen K4KV
>
>
>
> Tom
>
> I think that you need to know the impedance of your antenna first before
> think
> to use a matching section to adjust it to your coaxial.
>
> I have a 6 band quad 6-20m and only in 12m is needed the matching section
> all
> the others bands are direct feed to 50 ohms
> the antenna design was to have the direct feed to 50 ohms coax, the
> impedance
> is around 45-60 ohms in the bands and most of them reach the 1:1.1
>
> each loop is feed with a piece of coaxial cable to the remote antenna
> selector.
>
> More info about my antenna that was designed by Robert KG6B (I took
> advantage
> of his work and build mine first ) he have a photo of his antenna and
> all the related things in his web page http://www.kg6b.com/
>
> I have another 6m quad old design and that also feed direct to 50 ohms,
> from
> the packet.com
>
>
> Another great source of Quads mono band and long boom are in the W4RLN
> books
> Cubical Quad.
>
> Also a few clues of how you can get a direct feed to 50 ohms with
> broadband
> in
> quads (yagis also) is www.g0ksc.co.uk he is great in the design and
> modeling antennas
>
> Hope you learn a few new things of the quads modeled with powerful
> computer
> software.
>
>
>
>
>
> J.Hector Garcia XE2K / AD6D
> Mexicali B.C DM22fp
> P.O.Box 73
> El Centro CA 92244-0073
> http://xe2k.net
> http://dxxe.org
>
>
>
>
>
>
> ________________________________
> From: Tom Horton <k5iid@sbcglobal.net>
> To: antennas@mailman.qth.net; Tower Talk <towertalk@contesting.com>;
> ctdxcc@kkn.net; ntcc@yahoogroups.com; ham-antennas@yahoogroups.com
> Sent: Mon, November 8, 2010 8:41:16 PM
> Subject: [TowerTalk] Quads
>
>
>
>
>
>
> I've been using Quads for many (50+) years. Previously I have always used
> 1/4
> wave matching transformers.
> But this time when it went up, I purchased a commercial matching
> transformer.
> Well, when it was installed, it was open. So, for a temporary fix, the 20
> and 17
> meter elements were attached to the feedline directly. The antenna seems to
> perform quite well even in this hookup.
> I am tempted to just hook all the elemments to the feedline without a
> matching
> device of any kind.
>
> I have read many things written about doing this and it seems that all
> seem
> to
> have favorable results.
> I am interested in hearing from fellows that have done this and what their
> results were.
> Thanks,
> Tom K5IID
>
> _______________________________________________
>
>
>
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