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There's a separate UL 497C standard that covers coax, but I've not yet seen specs on a surge protector w/ coax connections that lists certification on UL 497C (they DO for UL 497A Secondary Protectors for Communications Circuits). I believe 497A covers phone / DSL lines on the protector? Since I've only been able to read scopes on ANY of these standards, I don't fully understand them. Am unable to find the actual standards (lots of places want to sell them).
Don't know if surge protectors mfgs don't get the UL 497C coax certification because it's too expensive to build protectors meeting the standard, unnecessary for ? some ? reason, this standard doesn't apply to surge protectors & coax... other unknown reasons.
Read numerous old posts here about surge protectors & coax (most about cable) - like this:
http://www.highdefforum.com/local-hdtv-info-reception/34077-antenna-grounding.html
You may also find that a surge suppressor with an coax connector can adversely affect reception. Under just about every condition, they are unnecessary.
1) Not sure why the coax conductor would need less (or none) surge protection than anything else. NOT talking about CABLE TV. I have a pre amp, but temporarily ignoring signal loss running coax thru a decent surge protector, it's an ungrounded copper conductor, attached to equivalent of a lightning rod, then attached to TV. Also NOT talking direct strikes (everyone mentions that).
2) Any suggestions on reasonably safely dealing w/ surges over the coax? Other methods or protectors that do meet UL standards (if they apply in this situation)?
EDIT: Maybe something like this would be applicable?
In-Line® Coaxial Lightning Surge Protectors
http://www.ptsupply.com/pdf/tii_SVN_VoIP.pdf
Thanks.
