Advice, please

At long last, after many, many years of planning and saving, I am,
hopefully, going to have a couple of satellite dishes stuck on the top
of the tower block where I live (planning permission expected) and fed
down to my apartment. Access to the signals will then be available to
others in the block to help me to recover the capital cost of
installation.

I want to understand as much of this as possible and require some
advice/explanations from the good folk here!

Firstly, the LNBs fitted to the dishes will not be the conventional
ones, but will turn the satellite signal into light, which will be fed
down fibre optic cables. I was told that the advantage of this
approach is that fibre optic distribution is relatively loss free
compared to the conventional co-axial cable used. Globalinvacom are
the manufacturers and if you want to look at their stuff, simply
Google the company name to see their website. Does anybody have any
experience of this approach? I know that the St Pancras Station
development in London uses fibre optic cabling.

Secondly, would you be so kind as to explain the differences and uses
of the following LNB: Universal Single, Universal Twin, Universal Quad
and Univeral Quatro.

I am particularly puzzled between Quad and Quatro, which almost seem
the same, with their linguistic roots both meaning 'four'.

Thanks!

John Porcella

In article
s.com, John scribeth thus
At long last, after many, many years of planning and saving, I am,
hopefully, going to have a couple of satellite dishes stuck on the top
of the tower block where I live (planning permission expected) and fed
down to my apartment. Access to the signals will then be available to
others in the block to help me to recover the capital cost of
installation.

I want to understand as much of this as possible and require some
advice/explanations from the good folk here!

Firstly, the LNBs fitted to the dishes will not be the conventional
ones, but will turn the satellite signal into light, which will be fed
down fibre optic cables.


Why, are the distances -that- great?..

I was told that the advantage of this
approach is that fibre optic distribution is relatively loss free
compared to the conventional co-axial cable used. Globalinvacom are
the manufacturers and if you want to look at their stuff, simply
Google the company name to see their website. Does anybody have any
experience of this approach? I know that the St Pancras Station
development in London uses fibre optic cabling.

Secondly, would you be so kind as to explain the differences and uses
of the following LNB: Universal Single, Universal Twin, Universal Quad
and Univeral Quatro.

I am particularly puzzled between Quad and Quatro, which almost seem
the same, with their linguistic roots both meaning 'four'.

Depends a bit on how your going to do this either One LNB with a number
of separate outputs, fine for small systems up to IIRC 8 TV's or a Four
into a distribution switch unit..

Thanks!

John Porcella

--
Tony Sayer

Firstly, the LNBs fitted to the dishes will not be the conventional
ones, but will turn the satellite signal into light, which will be fed
down fibre optic cables. *

Why, are the distances -that- great?

Yes. It is a twenty-one story building, with long corridors.

Also, I was told that this method would not be subject to
interference, nor would it interfere with the existing communal TV
system, even though the cables would run next to each other down the
dry risers.



Secondly, would you be so kind as to explain the differences and uses
of the following LNB: Universal Single, Universal Twin, Universal Quad
and Univeral Quatro.

I am particularly puzzled between Quad and Quatro, which almost seem
the same, with their linguistic roots both meaning 'four'.

Depends a bit on how your going to do this either One LNB with a number
of separate outputs, fine for small systems up to IIRC 8 TV's or a Four
into a distribution switch unit..

The system will have to feed my apartment to start with, with the
maximum need to feed up to 115 flats and apartments, some of might
want more than one outlet e.g. for a TVs in the living room and
bedroom etc.

Still wondering what those different types of LNB do!

John




Thanks!

John Porcella

--
Tony Sayer

On Wed, 21 Apr 2010 04:36:31 -0700 (PDT), John
wrote:


I am particularly puzzled between Quad and Quatro, which almost seem
the same, with their linguistic roots both meaning 'four'.

They are almost the same. I understand the difference to be:

Quad - four outputs, each output is switchable between Horizontal
High, Horizontal Low, Vertical High, & Vertical Low - the switching is
controlled by the Satellite receiver (almost always a Sky box, however
more choice is now available)

Quatro - 4 outputs, each one fixed to one of the following -
Horizontal High, Horizontal Low, Vertical High, & Vertical Low

Hopefully this is correct, but someone will be along in a moment to
correct if I'm wrong :-)

However, if I am reading the page at

http://www.triax.co.uk/Products/Fibr...cal%20LNB.aspx

correctly, if you are utilising an optical LNB ( and the associtaed
distribution kit) then the question is superfluous - the optical LNB
has only one output - the four polarities being carried in the one
fibre.

More info on optical distribution he

http://www.triax.co.uk/Products/Fibr...Solutions.aspx

--
Cheers

Peter

"John" wrote in message
...

Secondly, would you be so kind as to explain the differences and uses
of the following LNB: Universal Single, Universal Twin, Universal Quad
and Univeral Quatro.

Still wondering what those different types of LNB do!

You might find the explanation on this page helpful

http://en.wikipedia.org/wiki/Low-noise_block_converter

Roger R

On Apr 21, 2:27*pm, "Roger R"
wrote:
"John" wrote in message

...

Secondly, would you be so kind as to explain the differences and uses
of the following LNB: Universal Single, Universal Twin, Universal Quad
and Univeral Quatro.

Still wondering what those different types of LNB do!

You might find the explanation on this page helpful

http://en.wikipedia.org/wiki/Low-noise_block_converter

Roger R

You are right...an interesting article!

John

"John" wrote in message
...

Firstly, the LNBs fitted to the dishes will not be the conventional
ones, but will turn the satellite signal into light, which will be fed
down fibre optic cables.

Why, are the distances -that- great?

Yes. It is a twenty-one story building, with long corridors.

Assuming 10ft per floor and 100 foot corridors, longest distance
will be 310 ft from dish, that's nothing

Also, I was told that this method would not be subject to
interference, nor would it interfere with the existing communal TV
system, even though the cables would run next to each other down the
dry risers.

Use good screened coax it won't be a problem, using fibre is just an
excuse to cause expense

Steve Terry
--
Get a free Three 3pay Sim with £2 bonus after £10 top up
http://freeagent.three.co.uk/stand/view/id/5276

"Roger R" wrote:

http://en.wikipedia.org/wiki/Low-noise_block_converter

An interesting article which makes a point that I had overlooked, namely
that
most LNBs are kept powered because this helps to stabilise the temperature
and hence the local oscillator frequency.

Well, if you're switching between four LNBs as I am, only one LNB receives
power at a given time, leaving the others to go cold so to speak. This
doesn't matter at all for DVB-S HD and SD signals, but when switching to an
LNB for a DVB-S2 HD broadcast, the initial frequency drift manifests as
intermittent picture break-up until the system stabilises. The solution, no
doubt, is to obtain a suitably specified LNB...

"Steve Terry" wrote in message
...
"John" wrote in message
...

Firstly, the LNBs fitted to the dishes will not be the conventional
ones, but will turn the satellite signal into light, which will be fed
down fibre optic cables.

Why, are the distances -that- great?

Yes. It is a twenty-one story building, with long corridors.

Assuming 10ft per floor and 100 foot corridors, longest distance
will be 310 ft from dish, that's nothing

Also, I was told that this method would not be subject to
interference, nor would it interfere with the existing communal TV
system, even though the cables would run next to each other down the
dry risers.

Use good screened coax it won't be a problem, using fibre is just an
excuse to cause expense

Steve Terry
--
Get a free Three 3pay Sim with £2 bonus after £10 top up
http://freeagent.three.co.uk/stand/view/id/5276


critcher asked .................
so what is the greatest distance a quad lnb standard sky dish can operate
from with a decent signal strength ?

On 21/04/2010 19:13, critcher wrote:
so what is the greatest distance a quad lnb standard sky dish can operate
from with a decent signal strength ?

Most do 36,000 km

--
Adrian C