Re: TV and sound over CAT5

["paul gordon" <paul_gordon@xxxxxxx>]

Hi all,

I've followed this thread with interest, and the it ocurred to me the other
day, that my door camera (a bog standard mono £60 B&Q job) was supplied
to
me with about 120 feet of cable on it, which was far longer than I needed
to
get from my front porch, into my cellar, which goes right under the front
door! - total cable distance required: about 8 feet!.

So I decided to cut out all the surplus, and re-solder the scart plug on. I
left myself about 20 feet, and cut the cable, & I noticed that it was
mere 8
core (thin) telco - or alarm type cable (not twisted or anything). I
remember thinking hmmm, this is sending composite video AND power in the
same cable jacket, and the result is just fine. It was just fine even
before
I shortened it, so therefore I conclude that it's perfectly feasible to
send
both power & video over this type of cheap cable, for >100 foot
distances....

Regards.

Paul Gordon.


>From: "Keith Doxey" <keith.doxey@xxxxxxx>
>Reply-To: ukha_d@xxxxxxx
>To: <ukha_d@xxxxxxx>
>Subject: [ukha_d] Re: TV and sound over CAT5
>Date: Mon, 26 Jul 1999 22:48:08 +0100
>
>Hi Ashley,
>
>You cant run an RF TV signal over CAT5 but you can run Composite Video
and
>Audio over CAT5. Mark McCall has seen my working prototypes and I have
had
>5
>sets in use at work distributing a cable TV signal around the
structured
>wiring for 13 months now. I have also designed VGA and CCTV versions.
For
>over a year I have been promising to make the units available but due
to
>lack of time this has not yet happened. It WILL happen in the next
month as
>I have to install 10 CCTV cameras at work by the end of August so I am
now
>presured to get the units finished.
>
>Dont even try to send speakers over CAT5 unless you are talking about
>really
>low level background stuff. CAT5 cable is only designed for low current
>applications of less than 1 amp. Speaker currents can easily peak at 10
>times this value. There will also be considerable loss of signal
through
>the
>cable in the form of heat.
>
>For running speakers at any decent power level I would recommend the
use of
>2.5mm cable. Twin & Earth mains cable is probably cheapest but not
very
>flexible or pretty. Figure of 8 Twin Flex (79/0.2) is my preferred
choice
>as
>this is robust but flexible and not over expensive. I personally do not
buy
>Monster Cable or other similarly branded cable as in my opinion it is
>overpriced hype. All that you  need for speakers is a good quality
heavy
>guage cable to maximise the current transfer between amplifier and
speaker.
>
>Hope that helps
>
>Keith
>
>Keith Doxey
>http://www.btinternet.com/~krazy.keith
>Krazy Keith's World of DIY HomeAutomation
>
>
> > -----Original Message-----
> > From: akitson@xxxxxxx [mailto:akitson@xxxxxxx]
> > Sent: 26 July 1999 11:26
> > To: ukha_d@xxxxxxx
> > Subject: [ukha_d] TV and sound over CAT5
> >
> >
> > Does anyone have suggestions for running UK TV signal over CAT5
wiring?
> >  What are the limitations and what ancillary equipment is needed.
> >
> > Similarly does anyone have information about running speaker
level
> > sound over cat5 wiring?
> >
> > TIA
> > Ashley Kitson
> >
> >
> >
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