[Elecraft] K3 Power Reading/SWR/ALC Problem

[Jim Brown]

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.