[TowerTalk] step away from steppir, Son

[Jim Lux]

At 06:32 PM 6/13/2007, john at kk9a.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 <jimjarvis at optonline.net>
>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.