Re: Sky+ and terrestrial on 2 cables?

["Keith Doxey" <ukha@xxxxxxx>]

Hi Steve,

It would certainly work but with varying results depending on the
cable used.

Satellite transmissions are in the 11-13GHz band and the job of the
LNB is to convert the frequency sent down the cable to reduce losses.
It is downconverted to 950MHz to 2150MHz which sits just above the
470-860MHz UHF band which is why you can send FM (88-108MHz), TV and
Sat down the same cable.

What this unit does is to upconvert the second input by 2150MHz so
that the channels sit above the first lot, then at the bottom it
downconverts then again.

That is where the cable becomes of prime importance, the signal send
down it now has a bandwidth of 3.5 GHz which is way higher than
ordinary Satellite cable is specced for. With decent cable and short
runs there should be no problems but with cheap cable and/or a long
run, the losses at the high end of the second LNB could be quite
significant.

Hope that helps

Keith

--- In ukha_d@xxxxxxx, "Stephen Jones" <ukha@i...> wrote:
> Keith
>
> I just found out about a box called the destacker/stacker which
allows
> you put 2 sat IF feeds down the one cable and then split them apart
> again -
>
> http://www.johansson.be/htmen/stackerdestacker.php?ref=9633KIT%20UK
>
> http://www.cable-satellite.com/product_awards/award_news.htm
>
> Has anyone heard of this unit and would like to comment?
>
> SJ
>