Re: OK to use TV coax for microphone?

Chris S wrote:
> 
> On Sun 04 May 2008 04:28:55, Jeff Liebermann wrote:
> >
> > Incidentally, I blundered across this data sheet for RG-6/u.  They
> > can make it just about any way you want it, and still call it
> > RG-6/u. Note the line with:
> >   6) Braiding coverage: Between 30 - 97% available;
> > I can't imagine who would want to buy 30% coverage outer
> > ****elding.
> > <http://www.tootoo.com/supplier/product-detail/6251149/RG6%252fU.ht
> > ml>
> >
> 
> I too have started to feeling that there is a heck of lot more
> variation than I realised in how coax cables can be made and yet are
> still conform to some particular technical specification.
> 
> I came across some interesting articles at "abc cables".  Here are some
> which caught my eye. <http://www.abccables.com/technical-sup****t.html>
> 
>    Wire? or Cable?
>    RG6 Copper vs. Copper Clad Steel
>    RG59 vs. RG6
>    Better Copper?
> 
> I would like to get other (supplier's) info as that site is quite
> useful.  Has anyone got any links to these sort of explanatory
> articles?


   You can slap RG- numbers on anything.  It stopped being a military
standard a long time ago.  Belden, Alpha, Times wire websites should
have some good white papers.  RG meant 'Radio Guide', and all early coax
was braided copper ****elding. Their is still some RF coax made this way,
but it uses teflon and silver plated copper and is VERY expensive.

http://www.belden.com/pdfs/Cable101/****elding.pdf
page 32 states 'Braid
is for low frequency, foil for high frequency'.

<http://www.belden.com/pdfs/03Belden_Master_Catalog/06Coaxial_Cables/06Coaxial_Cables.pdf>
is the coaxial cable part of the Belden catalog. about 4 MB download.

<http://www.belden.com/pdfs/03Belden_Master_Catalog/2006_Belden_Catalog.pdf>
is their full catalog, about 38 MB download.


-- 
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida