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[DX] Vl: [HCDX] Kaz Antenna article by John Bryant
Tervehdys,
mielenkiintoinen uusi antenni esittelyssä allaolevassa osoitteessa, väittävät tehokkaammaksi kuin K9AY ja materiaalit itse tehtynä vain 10 $ luokkaa, tutustukaa....
73 JP
-----Alkuperäinen viesti-----
Lähettäjä: Mark Connelly <MarkWA1ION@xxxxxxxxxx>
Päivä: 19. huhtikuuta 2001 8:09
Aihe: [HCDX] Kaz Antenna article by John Bryant
>Greetings to all. I have web-posted John Bryant's
>excellent write-up of the "Kaz antenna" which
>was developed by renowned medium wave DXer
>Neil Kazaross. It is a "squashed delta" variant
>of the K6SE delta, a broadband terminated loop
>somewhat akin to the Pennant, Flag, K9AY, and
>Ewe receiving antenna designs used widely by
>many radio amateurs and by a large number of
>elite medium wave (AM broadcast band) DXers
>who specialize in hearing foreign stations.
>
>The article is available in Adobe Acrobat
>PDF format at the following URL:
>"http://members.aol.com/DXerCapeCod/kaztests.pdf"; .
>
>A segment of John's message inserted after mine
>here explains things a bit more.
>
>Enjoy !
>
>Mark Connelly, WA1ION - Billerica, MA, USA
>
>==========================================
>
>From: "John Bryant" <bjohn@xxxxxxxxxxxx>
>Subject: New Antenna Article
>
>Fellas,
>
>Here is another article, this one testing the "KAZ" series of antennas
>which Neil Kazaross and I have been working on for the past 6 weeks or so.
>The KAZ (my name for it, not Neil's) was developed by Neil, using EZNEC
>antenna modeling software and building on the work of K6SE in developing a
>series of Flag and Pennant antennas. All of K6SE's were optimized for 160
>meters. Neil's contribution was in changing K6SE's classic equilateral
>delta shape to a "squashed delta" with an aspect ratio of 1 to 4. This
>odd shape gives much better F/B ratios at the arrival angles typical of
>medium wave than does the classic equilateral delta. Neil (and my) first
>model, the "KAZ" is only 10' high x 40' wide and does a VERY good job. Neil
>went that small to try to develop a design for a typical urban situation
>and one that might even be erected in some attics or on some roof tops. The
>"Super KAZ" is 28' x 112'.
>
>These antennas are much cheaper and easier to build than the K9AYs and can
>be made for under US $10, if you wind your own toroid-based impedance
>transformer. Unlike most of my articles, its OK to put this one directly on
>the web Because of the low cost and the fact that the antenna, unlike the
>EWE and K9AY are independent of ground, I think that many MW DXers will be
>quite interested. Please feel free to use this article in any venue!
>
>I plan a "quick and dirty" small article on winding your own toroidal-based
>impedance matchers to be a follow-on to this article. That piece should be
>along in a week or so.
>
>John Bryant
>
>
>
>
>
>
>
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