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Thanks
Alan,
Just
looked at the site.
The
plan seems similar to what I installed in 1985.
When I
fed the audio and video from my VCR upstairs to a TV it was fine but the
moment
I connected the Audio to my disco mixer to do some recording I got the
worst
Earth Hum you have ever heard. Had to use isolation transformers to the
audio to
break the loop.
The
diagram on the site shows equipment connected at line level and also
sharing a
distributed RF signal. TV Boosters are often earthed (though not always)
and the
potential for getting earth loops is very high.
Phil
had an earth loop within the same room, distributing amongst rooms only
increases the chances of problems. KAT5 does not suffer ground loop
problems.
ALL professional signal distribution is as a balanced signal with no
reference
to ground because of the problems of earth loops.
I
also
dont see the need to "manufacture" a 4 coax cable when it already exists in
4 or
5 coax forms from numerous sources unless the term "manufacture" means
"print
company name on sheath"
If
people want to use coax then I have no problem with that but at a time when
all
the major players in the AV industry are producing procucts to distribute
over
CAT5 it seems a strange choice to use anything else.
As
Digital video becomes more commonplace we will see products to send the
Mpeg
streams directly over CAT5 cable. The broadcast industry already
distributes
Digital Audio in this way using CAT5 cable as the preferred transport for
the
signal.
Just
my £0.02
Keith
They are suggesting this for AV use,
so we
would have to cable to every point likely to require a TV, tough luck if
you
want to move it to the other side of the room.
Perhaps they expect us to flood wire it
alongside
cat5;)
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