On Mon, 7 Jul 2003 18:23:49 +0100, "Snowman"
wrote:

Yes it is plugs I'm after - I wired all the bedrooms a couple of years ago
when I decorated, and put in flat sockets. The problem is that now with
change arounds, a couple are behind beds and cupboards.

I happen to think that the sockets I suggested earlier (which point
downwards) might take up less room when used with a regular plug, than
having a right-angled plug.

I'm not sure that right-angled plugs exist anyway - though I'll be
happy to be corrected. The reason I say this is because when you get
into RF frequencies (which you do with TV signals) any kinks in the
cable run can lead to unfortunate stray signals - a bit like if you
have a pond with a stone standing out and you send a ripple across the
water - when it hits the stone you get all sorts of ripple patterns on
the surface.

I remember an experiment in my HNC Electronics course years ago where
a coiled cable was used, and terminating the cable at different places
made a hell of a difference to its usefulness! The signals went from
dead clean to highly corrupted just by moving the measurement point a
very short distance.

What happens is that the RF signal goes along the wire and if it is
properly terminated then all the energy is absorbed at the far end. If
not properly terminated (or kinked) then some of the energy bounces
back along the cable, degrading the quality of the signal due to
noise.

But, I do not claim to be expert in this arena so if someone at the
back shouts "rubbish!" please accept my apologies for wasting
bandwidth

Andrew

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