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Re: [Amps] Coax for MHV connectors?

To: Thomas Carlsson <thomascarl@gmail.com>
Subject: Re: [Amps] Coax for MHV connectors?
From: Dan Hearn <n5ardxcc@gmail.com>
Date: Sat, 23 Jun 2012 16:16:56 -0700
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Jim: you need one of the small teflon coaxes like RG142. The same stuff is
ideal for making ferrite line chokes for legal limit power. 10 turns on a
2.4 inch OD type 31 core makes a great choke. Remember the square law
applies for multiple turns on the core.
73, Dan, N5AR

On Sat, Jun 23, 2012 at 4:01 PM, Thomas Carlsson <thomascarl@gmail.com>wrote:

> Cheap and quite nice way to do it.
> Use Cable for spark-plugs and a spark-plug-cap. To mate the Spark-plug-cap
> take a cheramic isolator similar to what is used for antenna pass-through,
> usually
> the screw fits the cap well.
>
> 73,
> Thomas Carlsson, PY2ZXU
>
>
> On Sat, Jun 23, 2012 at 7:39 PM, Jim Barber <audioguy@q.com> wrote:
>
> > I need to make up some MHV cables for a 4KV 2A max DC supply, (both B+
> > and B-) and I made the mistake of looking up the voltage ratings for
> > RG-58, RG-59 and LMR-240 cables, all commonly used with those connectors:
> >
> > RG-58        1900V
> > RG-59        2300V
> > LMR-240      1500V
> >
> > In a word, yikes! RG-59 has the highest rating, but I like it the least
> > for exposed cables because of the solid center conductor
> >
> > The connectors are rated at 5KVDC, but what cable type? It seems like
> > every time I think I know something... ?
> >
> > I'm tempted to give it up and machine my own bulkhead pass-throughs out
> > of acrylic and use HV cable instead. In fact I would have already except
> > I'd really like the cables to be detachable.
> >
> > Comments?
> >
> > Thanks,
> > Jim N7CXI
> >
> >
> > _______________________________________________
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> > http://lists.contesting.com/mailman/listinfo/amps
> >
>
>
>
> --
> Thomas, PY2ZXU/SM0CXU
> Member of the PW2D Team
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>



-- 
Dan Hearn
N5AR
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