I strongly agree with Bob's advice, EXCEPT that I've gotten really tired
of replacing Polyphasers on my high wire dipoles. I've recently switched
to the arrestors that Array Solutions sells, both because I like the
circuit better and because the gas discharge tubes are user replaceable.
The Polyphasers are feed-through types mounted to the entry panel. The
Array Solutions are mounted in a big Hoffman box, for which W6GJB built
some custom mounting brackets. It's mounted to the wall next to the
plate with the Polyphasers, with two 2-in PVC conduit stubs going
through the wall and holes drilled at the bottom of the enclosure for
coax entry.
73, Jim K9YC
On 1/21/2018 2:14 PM, Bob McGraw K4TAX wrote:
From experience, I'd say nearby lightning strikes would be the
culprit. I strongly urge everyone to use protection devices on all
coax and balanced lines at the point where the feed lines and rotor
lines enter the house. I prefer Polyphaser devices. Don't buy cheap
or ham fest bargain table crap! Your radio and your house depends on it.
I don't disconnect antennas nor do I ground antennas. I protect for
lightning outside and prefer to choose methods where it will not be
allowed in the house. And I'm on a hill and have two towers which
are 500 ft above average terrain out to some 35 miles. I understand
lightning and what it can do. As to lightning, mitigation is the
approach, elimination is not physically possible.
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