Paul,

It depends on the application...

I tend to use RG58 size coax for short connections which don't have to be
phase stable and loss isn't overly important. For applications which are
more demanding I use RG214 with N type connectors. This is the 10mm outside
diameter stuff and is double screened. It's about as good as you can get
with a braided screen.

If you need a 6mm o/s diameter cable which has a braided screen make sure
that it has a multi stranded inner (solid core inners snap fairly quickly in
test gear applications and are only any good for fixed installations) and
double screening to reduce radiation from or into the cable.

For the ultimate in screening and whilst retaining some flexability there is
the Andrews FSJ1-50A which has a solid corucated outer (but also a solid
inner). I'm not sure but an N type connector might be the smallest they do
for this cable.

Mike.

> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf
> Of Paul Anderson
> Sent: 04 February 2007 07:48
> To: Microcontroller discussion list - Public.
> Subject: [EE] Which coax
>
>
> I'm looking to make some patch cables for hooking together test
> equipment.  I have some RG-58U, but I understand that isn't the choice
> cable.  What is generally preferred?  For the most part, I'll probably
> be dealing with 50 ohm impedance stuff.
>
> --
> Paul Anderson
> VE3HOP
> wackyvorlon@gmail.com
> http://www.oldschoolhacker.com
> "May the electromotive force be with you."
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