At 06:32 PM 6/13/2007, email@example.com wrote:
>This is a ridiculous claim. How can it be noticeably better than a 4el 10m
>yagi on a 16' boom or a 3 el 20m yagi (like a Hy-Gain 203BA) on a 16' boom?
Not so ridiculous.
Noticeable is, of course, in the eye of the beholder, but
A 3 el SteppIR doesn't have to compromise to try and get performance
at a variety of frequencies with the same length elements. This gives
at least the potential for point optimization for gain and/or F/B, at
the expense of bandwidth.
I suspect that
over a given bandwidth
with the same length boom
and the same number of elements
the SteppIR can be set to a configuration that gives
a) more gain/directivity
b) more F/B
although not necessarily at the same time, and certainly not without
readjusting when you change frequencies.
>From: Jim Jarvis <firstname.lastname@example.org>
>Date: Wed, 13 Jun 2007 18:17:05 -0400
>unfortunately, that doesn't say much for the physics of the
>situation. 3 el SteppIR is still noticeably (measurably) better
>than anything else on a 16' boom, in a real A/B comparison.
>Haven't owned a 4 el, so can't speak for that vs. 32' boom
>options. Suspect also true.
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