[time-nuts] Don't use cheap cables -- a cautionary tale

Robert Darlington rdarlington at gmail.com
Sun Mar 3 14:03:33 EST 2013


Alligator clips,  of course.

-Bob


On Sun, Mar 3, 2013 at 11:50 AM, Henk ten Pierick <henk at deriesp.demon.nl>wrote:

> Hi,
>
> The use of double shielded cables does raise the question to what type of
> connectors to use?
>
> Regards,
>
> Henk
>
> Op 3 mrt. 2013 om 17:30 heeft Jim Lux <jimlux at earthlink.net> het volgende
> geschreven:
>
> > On 3/3/13 8:00 AM, Kevin Rosenberg wrote:
> >> On Mar 3, 2013, at 7:59 AM, John Ackermann <jra at febo.com> wrote:
> >>> Lesson learned -- use only double-shielded cable in the oscillator
> rack (and in any RF measurement path) from now on.
> >>
> >> I've learned that lesson as well. John Miles said that RG-58 is
> occasionally referred to as 'soaker hose'.
> > RG-58 (which by the way, is a spec that officially no longer exists as
> part of MIL-C17-28, ditto for RG-8, RG-213, etc. The military apparently
> doesn't use PVC insulated wire any more.) comes in myriad forms all of
> which bear a passing resemblance to each other.  (leaving aside the RG-58A,
> RG-58, RG-58C differences).
> >
> > The term seems to be used for any 50 ohm single shield coax that's about
> 0.20 inch in diameter with solid polyethylene insulation. You really need
> to look at the specific model number to know what the shielding looks like.
> It could be anything from a  very loose weave of thin copper strands to
> something nice and dense.
> >
> >
> >
> >
> >
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