[Premium-Rx] RG58

[Gary Geissinger]

Guys,

We us RG-223 at work.  It is a double shielded RG-58 like cable.

Gary



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-----Original Message-----
From: premium-rx-bounces at ml.skirrow.org
[mailto:premium-rx-bounces at ml.skirrow.org] On Behalf Of Edward Knobloch
Sent: Tuesday, April 05, 2005 4:25 PM
Cc: premium-rx at ml.skirrow.org
Subject: Re: [Premium-Rx] RG58



Hello, Richard

The double braided mil spec 50 Ohm coax  of RG-58 size is RG-55B/U. If
it has teflon dielectric, it is RG-142B/U.

The only currently mil-spec RG-58 (single braided) coax is RG-58C/U
Versions earlier than RG-58C/U used  a polyvinyl chloride (PVC) covering
, which would leach plasticizing  agent over time to the inner
dielectric 
material,
increasing the loss of the coax.  RG-58C/U uses a type IIa protective
covering (non-contaminating PVC or PVC-acetate).

Likewise, RG-8/U (single braided) was replaced by the non-contaminating 
RG-213/U
The double-braided RG-9/U (same size and loss as RG-8  coax) was
replaced by the non-contaminating RG-214/U.

Beware of coax that says something like "RG-58 type"
or "RG-8 type".  The actual material is not necessarily mil spec, and if
the manufacturer is cutting corners, you won't get a good product. The
real McCoy coax will say Mil-C-17 on it. Recent military labeling of
RG-58C/U is M17/197-00001.

73,
Ed Knobloch




RichardReich at aol.com wrote:

>
> Surely RG58-A-U is OK.
>
> Its a double shielded military spec cable. I've never had probelms
> with it for LF work, but would like to hear what others use.
>
> Richard



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