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[TowerTalk] Polyphaser protectors

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Subject: [TowerTalk] Polyphaser protectors
From: (Tom Rauch)
Date: Mon, 24 Sep 2001 04:45:32 -0400
> I have both a standard phone line and a DSL line running into my
> shack.  I am using a Polyphaser IS-DPTL dual line protector with no
> problems whatsoever.  I think I paid around $99 for it along with all
> the other polyphaser stuff.  Can't comment on the effectiveness of it.
>  No lightning strikes yet :}

I don't know how anyone can tell for sure anyway.

I DON'T have any specialized lightning gaps or arrestors, I only use 
grounding that is properly installed and a pair of MOV's on the 
power line. What I do is similar to what BC stations have done for 
many years when they had little (if any) trouble in storms. 

RCS-8V's are in all feedlines someplace in the system, and they 
do isolate the center conductors of feeders (which is actually better 
than anything else other than disconnecting the cables can do).

While I think it is a good idea to disconnect stuff, I don't and can't 
disconnect control lines or antenna cables because there are far 
too many cables. 

Without any specialized protection other than a proper installation 
for grounding normal bypass caps and some diode clamps on 
sensitive control lines, I go through storm after storm without 
equipment damage. This includes direct hits on my 300 foot tower.

On occasion I do have a Beverage transformer and I have even had 
a Beverage antenna wire vaporize, but generally it is just one 
antenna out of dozens.

99% of protection is in proper lead routing and grounding.
73, Tom W8JI 

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