Question about Freesat signals
 

On Sun, 23 Aug 2009 17:05:22 +0100, Ian Jackson
wrote:

In message , writes
On 23 Aug,
"Bill Wright" wrote:

I quizzed several manufacturers about this at the recent CAI show, and they
assured me that a modern Sky box will be untroubled by the load. I am a bit
sceptical.

How is it proposed that fibre fed LNBs are powered?

Line power using James Bond laser at the receiving end?

Hmm. With a nicely polished dish perhaps the death ray could zap a path
through any troublesome trees etc.

Alternatively, I would think coax would work.

--
Peter Duncanson
(in uk.tech.digital-tv)

Question about Freesat signals
 

Ian Jackson wrote:

In message , writes

How is it proposed that fibre fed LNBs are powered?

Line power using James Bond laser at the receiving end?
Alternatively, I would think coax would work.

Yes, the Triax optical LNB that was mentioned in this group earlier in the
year had an f-connector for power, presumably because aerial riggers
already have the kit to waterproof coax connections.

--
Dave Farrance

Question about Freesat signals
 

In message , wrote
On 23 Aug,
"Bill Wright" wrote:

I quizzed several manufacturers about this at the recent CAI show, and they
assured me that a modern Sky box will be untroubled by the load. I am a bit
sceptical.

How is it proposed that fibre fed LNBs are powered?


Send light with a different wavelength back up the fibre and shine it on
a solar cell in the LNB.

--
Alan
news2009 {at} admac {dot} myzen {dot} co {dot} uk

Question about Freesat signals
 

In message , Alan
writes
In message , wrote
On 23 Aug,
"Bill Wright" wrote:

I quizzed several manufacturers about this at the recent CAI show, and they
assured me that a modern Sky box will be untroubled by the load. I am a bit
sceptical.

How is it proposed that fibre fed LNBs are powered?


Send light with a different wavelength back up the fibre and shine it
on a solar cell in the LNB.

Alternatively, feed the return path light (on the different wavelength,
and diplexed out via an optical filter, of course) into water in a
boiler. The water heats up and generates steam, which drives a
generator, which generates electricity, which powers the LNB.

On the other hand, a coax power feed might be easier.
--
Ian

Question about Freesat signals
 

On Sun, 23 Aug 2009 13:20:52 +0100, "R. Mark Clayton"
wrote:

snip


Emerging technology is going to use fibre to send the whole lot down a
single fibre.

I think it's already emerged:

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

Well I would say it was still emerging.


Apparently quite expensive at the moment

Not half, but expect this to change and to be able to cascade the LNB's.

by cascade do you mean:

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

It certainly sounds good - far less cabling required - just the one
fibre patch-cord to each TV (Then an optical - electrical converter)

It uses industry standard FC/PC connectors too
--
Cheers

Peter

Question about Freesat signals
 

wrote in message ...
On 23 Aug,
"Bill Wright" wrote:

I quizzed several manufacturers about this at the recent CAI show, and
they
assured me that a modern Sky box will be untroubled by the load. I am a
bit
sceptical.

How is it proposed that fibre fed LNBs are powered?

They have an F-connector connection for power only, but these could be
chained.


--
BD
Change lycos to yahoo to reply

Question about Freesat signals
 

wrote in message ...
On 23 Aug,
"Bill Wright" wrote:

I quizzed several manufacturers about this at the recent CAI show, and
they
assured me that a modern Sky box will be untroubled by the load. I am a
bit
sceptical.

How is it proposed that fibre fed LNBs are powered?

By coax.

Bill

Question about Freesat signals
 

wrote in message ...
On 23 Aug,
"Bill Wright" wrote:

I quizzed several manufacturers about this at the recent CAI show, and
they
assured me that a modern Sky box will be untroubled by the load. I am a
bit
sceptical.

How is it proposed that fibre fed LNBs are powered?

The fibre includes a hollow tube. A small compressor at the head end forces
air into this tube. At the LNB a tiny and intricate pneumatic engine drives
an alternator. In areas with mains gas a supply of same can be introduced
into the pipe, and a miniature gas turbine fitted to the LNB.

The best idea of all, it seems to me, if for the LNB to be powered by
batteries. The batteries will be special ones that can only be replaced by
licensed dish installers. The cost is expected to be immodest.

Bill

Question about Freesat signals
 

On Sun, 23 Aug 2009 21:35:18 +0100, Bill Wright
wrote:


wrote in message

How is it proposed that fibre fed LNBs are powered?

The fibre includes a hollow tube. A small compressor at the head end
forces
air into this tube. At the LNB a tiny and intricate pneumatic engine
drives
an alternator. In areas with mains gas a supply of same can be introduced
into the pipe, and a miniature gas turbine fitted to the LNB.

The best idea of all, it seems to me, if for the LNB to be powered by
batteries. The batteries will be special ones that can only be replaced
by
licensed dish installers. The cost is expected to be immodest.

Bill


I would have thought in these "ECO" times you would have suggested a Wind
Generator Bill ... hot or cold air would suffice and when the wind didn't
blow you could pop round and ... setup a generator attached to their
fridge door and they would just have to keep opening and closing it like
they do normally when they're snacking.

--
http://www.madge.tk Madges Links
http://twitter.com/MadgeTwits Yes IKNOW.

Question about Freesat signals
 

"Madge" wrote in message
news:[email protected]
On Sun, 23 Aug 2009 21:35:18 +0100, Bill Wright
The best idea of all, it seems to me, if for the LNB to be powered by
batteries. The batteries will be special ones that can only be replaced
by
licensed dish installers. The cost is expected to be immodest.

Bill


I would have thought in these "ECO" times you would have suggested a Wind
Generator Bill ... hot or cold air would suffice and when the wind didn't
blow
When the wind doesn't blow it won't matter because there will be no leccy
for the telly.


you could pop round and ... setup a generator attached to their fridge
door and they would just have to keep opening and closing it like they do
normally when they're snacking.

How about a generator attached to their fridge doors that outputs to
electrodes on their goolies? That'll teach the fat buggers.

Bill