On 11/20/2023 8:00 PM, Rick NK7I wrote:
In that search, high on the list of suspects (right up there with
failure of any antenna elements) is damage from tiny livestock (mice,
rats, birds that may have gotten into the attic or bugs like mud wasps);
chewed wires, cables and insulators.
More possibilities. Back in Chicago, I traced an intermittent in an
antenna to a junk connector adapter. After getting back on the air in
2003 after 20+ years off, I made the mistake of restocking my parts
stash with junk adapters from a Chicago flea market. Over the next five
years, I traced a half dozen failures to them as a cause. My definition
of a junk connector is one that isn't stamped "Belden," or with a MIL
part number, or one of the types made for hard line.
Perhaps a ferrite choke that is poorly designed, under-rated for the
specific use, or used with a badly imbalanced antenna has failed. They
do that. :) And, of course, loose connectors.
73, Jim K9YC
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