I don't have names for you; twisted pair anything will probably be better
than what you have. I have the cable purchased some years back which has
several twisted pairs in each length. I have some with 4, 8, & 12 cores (= 2,
4, & 6 pairs) and it's the business. Some of it has a shield as well, but I
never bothered with that as I don't have the need for it.
Regards,
Declan Moriarty
Applied Researches - Ireland's Foremost Electronic Hardware Genius
A Slightly Serious(TM) Company
Without the optimist, the pessimist wouldn't know how happy he isn't
Was it Jeremy N. E. Proffitt who wrote on Sunday 06 October 2002 16:23:
> I am thinking of re-running the phone line for him. The trench has been
> closed but I can work in a phone line 1" below the ground on a wet day
> here.
> I'm thinking of using CAT5 cable for the phone line, would this be best?
> > The cable itself is probably the problem. I'm no phone expert, but I
> install
> > phones once a year, for a convention. The best phone wire is twisted pair
> > single strand. If your landlord used four wire multi strand, not only
> will
> > you have a hum, but also some loss over the distance. Can the wire be
> changed?
> > Was it Jeremy N. E. Proffitt who wrote on Sunday 06 October 2002 14:38:
> > > It is an extension to my landlord's shop. The hum didn't exist till
> after
> > > installation, they used standard four wire phone cable - not sheilded.
> My
> > > landlord installed this line himself. If you are in the shop and turn
> on
> > > the compressor or table saw, the hum gets worse. Is there a filter I
> > > can add or something?
> > > How do you know that is the direct cause? Buried phone lines are
> > > normally shielded, and power line hum is usually related to a ground
> fault
> > > of one kind or another. Another common cause is rodent damage in
> pedestals
> > > that can make those spots act like a semiconductor and pick up all
> > > sorts of
>
> > > noise. Did the hum get worse over time? Did it start suddenly? Has
> > > it existed since the installation? Who was the wise guy that put em in
> > > the same trench? Is this a telco installation, or private? -----
> > > Anybody out there have any good ideas on how to eliminate a 60
> > > cycle hum from a telephone line. The hum is directly related to the
> > > phone wire
> > > being run with 500 feet of power cable in the same trench.
> > > Any ideas would be appricated. Thanks
--
Author: Declan Moriarty
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