Cable to take TV signal 30M ish? Minimal Signal Drop?
 

Hello Group - I hope this is not too far off topic.

I am having some building work done on my house and will be replacing
skirting boards, as such I have a great opportunity to hide cables (network
and tv).

I want to have a mini hub style thing somewhere out of the way and have
everything running into that so that I can then break the tv signal out into
different rooms (and use a device to change channel on sky / cable etc).

A mate told me this morning that if I use RF cable from the cable box into
my hub and then back out into another room and onto a plasma the picture
will look awful as RF will lose too much (the distance here is 30m max -
basically cable and tv at the front of the house, plasma in the conservatory
at the back)

Is this true?

If so what other sort of cable should I be thinking of using for that kind
of distance?

Many thanks in advance for any advice!

Carl.

A mate told me this morning that if I use RF cable from the cable box into
my hub and then back out into another room and onto a plasma the picture
will look awful as RF will lose too much (the distance here is 30m max -
basically cable and tv at the front of the house, plasma in the conservatory
at the back)

Is this true?
The picture on your big screen will look crap whatever the cable length
if you feed the screen from RF (aerial-type signal). The screen should
be connected to each set top box using RGB scart cables.
If necessary use an automatic scart switcher.
The correct way to distribute the RF outputs of your set top boxes to
other rooms is to take them all seperately to the 'hub'. At that point
amplify each one seperately by about 12dB then
combine them (+ off air) using channel filters.
The output of the filters goes to the final (main) amplifier.


If so what other sort of cable should I be thinking of using for that kind
of distance?
CT100 copper foil on copper braid. See the article about coax on my
website.

Bill

SNIP
|
| Many thanks in advance for any advice!
|
| Carl.
|

You might find some info here

http://www.automatedhome.co.uk

Sorry if this appears dumb, but what is the url of your website?

Carl.
wrote in message
oups.com...


A mate told me this morning that if I use RF cable from the cable box
into
my hub and then back out into another room and onto a plasma the picture
will look awful as RF will lose too much (the distance here is 30m max -
basically cable and tv at the front of the house, plasma in the
conservatory
at the back)

Is this true?
The picture on your big screen will look crap whatever the cable length
if you feed the screen from RF (aerial-type signal). The screen should
be connected to each set top box using RGB scart cables.
If necessary use an automatic scart switcher.
The correct way to distribute the RF outputs of your set top boxes to
other rooms is to take them all seperately to the 'hub'. At that point
amplify each one seperately by about 12dB then
combine them (+ off air) using channel filters.
The output of the filters goes to the final (main) amplifier.


If so what other sort of cable should I be thinking of using for that
kind
of distance?
CT100 copper foil on copper braid. See the article about coax on my
website.

Bill

Sorry if this appears dumb, but what is the url of your website?

No, it's me. I was absolutly knackered when I wrote that. The URL you
want is
http://www.wrightsaerials.tv/coaxcablequalityhmdim.htm

Bill

you should be ok with "loftbox" type distribution, see www.tvlink co
uk.

Also, for 30m.

But use satellite grade cable, less lossy, especially if behind
skirting board! Wickes sell 100m drums of rg6u for =A320.

Unfortunately, SCART won't work over 30m!

you should be ok with "loftbox" type distribution, see www.tvlink co
uk.

Also, for 30m.

But use satellite grade cable, less lossy, especially if behind
skirting board! Wickes sell 100m drums of rg6u for =A320.

Unfortunately, SCART won't work over 30m!

sorry, i gave misspelled weblink, should have been www.tvlink.co.uk !

You should be ok with 30m, just try it. Unfotunately, it's much too
long for a SCART lead.

Use satellite grade cable (especially if going behind skirting board!),
much less lossy, and picture quality shouldn't suffer too much. Wickes
sell 100m drums of rg6u for =A320, ideal for this.

See www.tvlink.co.uk, for sorts of things you can get.

Another way of doing it would be to distribute the actual digital
signal (COFDM or SAT i.f.), then use a receiver in actual room, can be
done if Freeview, but a problem if satellite.

Another way of doing it would be to distribute the actual digital
signal (COFDM or SAT i.f.), then use a receiver in actual room, can be
done if Freeview, but a problem if satellite.

Not really. You can put sat IF on every downlead if you like. If
there's a plamsa a big distance from the head end I'd suggest a second
Sky box dedicated to that screen and situated next to it. The other Sky
box at the head end can be controlled from all rooms via Sky eyes.

Bill