----- Original Message -----
From: "Steve London" <n2ic@arrl.net>
To: <towertalk@contesting.com>
Cc: "na5s" <na5s@zianet.com>
Sent: Wednesday, March 16, 2005 2:08 PM
Subject: Re: [TowerTalk] Help in planning a new QTH
> Those Steppir gain figures are very questionable. They are
> significantly higher
> than the gain figures for optimized yagi designs in the 20th
> edition of the ARRL
> Antenna Book.
-----
But, those handbook designs have design constraints over the
ENTIRE HAM BAND:
F/R > 20dB
SWR < 2:1
Steppir, since it changes its lengths as a function of frequency,
can use a high performance, but narrow bandwidth, set of
parameters. You won't find a design like that in an antenna
handbook.
I don't own one. I'm just intrigued by the concept.
Dave Hachadorian, K6LL
Yuma, AZ
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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