----- Original Message -----
Sent: Sunday, January 09, 2005 3:10
PM
Subject: Re: [Repeater-Builder] Re:
Decibel Products DB-224 Antenna & Noise
Yes, they have rod/coil construction. I
know from taking one apart that didn't last only months before lightning
destroyed it.
That was a painful experience since it
was a borrowed antenna. I had to buy a new one for the guy I borrowed it from
and still had to come up with an antenna for the repeater it was
being been on.
Chuck
WB2EDV
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I have had excellent long-term luck with the Sinclair SRL-229. It's
a large aperture (23+ foot) fiberglass radomed stick, but is not built like
the stationmaster with opposing sections of large (copper water pipe)
coax. I have had experience with several that have been up for 20+ years
without failure in the duplex mode. I don't know how they are made
internally because I have never had to take one apart. A Sinclair
Engineer told me they were not made like their competition, and might possibly
be solid rod with phasing coils between them.
Any fiberglass radomed
antenna will suffer greatly from Corona and Precipitation Static, especially
when top mounted. This was a big deal until the Static Buster was
developed, tested, and proven to nearly eliminate the problem.
<http://www.repeater-builder.com/antenna/static.html>Kevin
Custer
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