Hey Paul,
How about posting some pictures somewhere so we can see your creation?
Thanks,
Jeff
N1KDO
At 04:18 PM 10/30/2004, you wrote:
>Recently when I said I was building one of these, some folks
>wanted my evaluation of it when it was completed. I've
>misplaced your emails (I hate when that happens!) so will
>post it here and hope Kevin doesn't mind.
>
>I built a "10 element" UHF version. One minor concern: I
>couldn't change the SWR at all by moving the decoupling
>sleeve up or down. However, it's OK since the SWR minimum
>is exactly on my design frequency. Impressive.
>
>I was actually shocked to find the SWR did not change
>appreciably between top mounting, side mounting at 1/2 or
>1/4 wavelength. I expected it to "complain" about the
>nearby tower when side mounted. It doesn't even seem to
>notice.
>
>Unfortunately I don't have much to compare its performance
>to. The previous antenna was a Cushcraft 4-pole dummy load
>at the same height. The coaxial collinear provides MUCH
>better coverage (no surprise there <BIG grin>). I have a
>VHF repeater at the same site (1 dB less power into a 5 dB
>gain commercial StationMaster). Over flat terrain VHF and
>UHF coverage is very nearly identical. In rolling hills VHF
>is generally better, as you might expect. In mountainous
>terrain VHF sometimes has the edge, other spots the UHF
>wins hands down. I wish I could offer more meaningful
>comparisons. I'm quite happy with it and plan to build more
>of them for other sites and applications.
>
>Paul N1BUG
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>Yahoo! Groups Links
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