RE: Cable advice - long runs?

[Keith Doxey <keith.doxey@xxxxxxx>]

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Hi Ian,

Where low grade coax could be a real problem is the poor screening.

Several years ago when ASTRA 1D was launched there were lots of problems
with TV reception in some areas. The problem arose due to the Astra 1D
signals being below the normal Satellite downlead range of 950-1750 MHz.
Astra 1D signals picked up by the original "non-enhanced" LNB's
came in the
range of 700-950MHz.

In our area the terrestrial TV signals are at the upper end of the UHF band
which extends to 860MHz. Where people had satellite systems and TV aerials
installed using cheap coax there was bleed through when the cables ran in
close proximity to each other as often occurs where they follow the same
path from roof to ground floor.

The only cures were

Upgrade to "Enhanced LNB"

Replace Cables

Re-route existing cables to provide a greater physical separation.

If you are running cables in the same chase it might be wise to consider
this and use CT100 instead.

HTH

Keith

-----Original Message-----
From: Ian Lowe [mailto:ian@xxxxxxx]
Sent: 19 September 2000 13:54
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Cable advice - long runs?



I have a sinking feeling about this.... :(

I am about two thirds of the way through retro-fitting Co-ax cable for
video distribution, and I have been using Maplin's cheap and cheerful
White Co-ax.

The longest run I have in the house is 7m, from my wiring closet up
into the loft, then down again into the living room.

Question is: am I wasting my time with this cable, or is the quality
likely to be okay over short runs? I decided to do the most awkward
runs first, so I am hesitant about ripping it out :(

As a semi-mitigating factor, I am about six miles away from the
Black-Hill transmitter, and can get pretty good reception by sticking a
coat hanger in the back of my TV!


Ian.

=3D=3D=3D=3D=3D
>+++
Ian R Lowe. Director, Wintermute Consultancy Ltd.
e-mail: ian@xxxxxxx
Onward and Upward! Towards Ascension!

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