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RE: Stripped Coax
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- Subject: RE: Stripped Coax
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Sat, 07 May 2005 11:10:31 -0600
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Original poster: "Rich" <rdjmgmt@xxxxxxxxxx>
Thanks for all the information , I only use the solid insulation for my
RF use. I got the three rolls of foam type for $4.00 and was looking to
use the RG-11 "size" with my coil stuff. I only wanted the 800ft of
large cable but the two rolls of RG-6 came with the deal.
My roll of RG-8U has been with me for years and it is solid insul.
I did have my hands on a large roll of RG-17 30 years ago but could not
move it around with me. It would have been fun to try some of it today.
Subject: Re: Stripped Coax
Original poster: "Jim Lux" <jimlux@xxxxxxxxxxxxx>
The nominal voltage ratings on coax are for RMS voltage, at an frequency
several MHz, and allow for a infinite mismatch.
The DC standoff voltage is much higher, in practice (albeit, not
by the mfr).
anything with foam insulation (very common for cable TV coax, to reduce
weight, cost, and loss) is useless for HV. So, most of the RG-59/RG-6
stuff you see inexpensively isn't particularly useful.
What you want is the solid dielectric stuff RG-8/RG-213, etc... It's
usable, with care, to 50kV DC. Certainly good for 10-20 kV.
For what it's worth, there is no such thing as Mil-Spec RG-213, RG-8,
etc. The Mil-specs for those types of PVC jacketed coaxes were
some years ago.
Subject: Stripped Coax
> Original poster: "Rich" <rdjmgmt@xxxxxxxxxx>
> I saw a note from Dr.R about using stripped coax , I ran across a
> on a 500 roll of RG-6 , a 500ft roll of twin RG-6 and about 800ft of
> ft roll of what looks like RG-11 , 14 solid and foam , all marked as
> line, good to 1ghz. It has the duel shield and sticky alum wrap. The
> rate on what I look up is not very much on this, can any one give me
> rough idea on what voltage it is good for with Tesla use, stripped