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-   -   Line powered distribution amp (http://www.homecinemabanter.com/showthread.php?t=71671)

Ray April 16th 12 02:34 PM

Line powered distribution amp
 
My parents currently have a single TV in their lounge connected via a
power supply to a mast head amp and aerial.
They now wish to put a TV in the bedroom of their bungalow and wanted
to put a splitter in the loft to feed it. I am not sure that their
signal is strong enough to be split with a passive splitter so was
thinking of a two-way distribution amp in the loft. There isn't a
convenient mains supply in the loft and, as the coax is already
powered for the mast head, I was wondering if anyone sells a line
powered distribution amp that also passes the power through to the
mast head?

Dave Plowman (News) April 16th 12 03:37 PM

Line powered distribution amp
 
Unless it's an unusual loft, surely the lighting wiring from the floor
below is readily accessible?

--
*And don't start a sentence with a conjunction *

Dave Plowman London SW
To e-mail, change noise into sound.

Bill Wright[_2_] April 16th 12 04:30 PM

Line powered distribution amp
 
Ray wrote:
My parents currently have a single TV in their lounge connected via a
power supply to a mast head amp and aerial.
They now wish to put a TV in the bedroom of their bungalow and wanted
to put a splitter in the loft to feed it. I am not sure that their
signal is strong enough to be split with a passive splitter so was
thinking of a two-way distribution amp in the loft. There isn't a
convenient mains supply in the loft and, as the coax is already
powered for the mast head, I was wondering if anyone sells a line
powered distribution amp that also passes the power through to the
mast head?

If there's a masthead amp it's extremely unlikely that you need further
amplification in the loft. The signal/noise ratio has been set at the
masthead and the signal level will be well above the point where
receiver noise matters. So what you need is a splitter that passes DC to
one leg. It you use one that passes DC to both legs (CPC APO1021) simply
fit an outlet with DC block on the bedroom feed, or fit a DC blocker on
that output of the splitter. However, many splitters have diodes on the
DC path so you might not need to do that. Try it. Short it out for a
moment on the bedroom feed, see if the living room telly goes off. Won't
do any harm.

Bill

R. Mark Clayton April 16th 12 06:18 PM

Line powered distribution amp
 

"Ray" wrote in message
...
My parents currently have a single TV in their lounge connected via a
power supply to a mast head amp and aerial.
They now wish to put a TV in the bedroom of their bungalow and wanted
to put a splitter in the loft to feed it. I am not sure that their
signal is strong enough to be split with a passive splitter so was
thinking of a two-way distribution amp in the loft. There isn't a
convenient mains supply in the loft and, as the coax is already
powered for the mast head, I was wondering if anyone sells a line
powered distribution amp that also passes the power through to the
mast head?


Should not need further amplification, if there is not enough signal get a
bigger aerial.

If you do leave something permanently powered in the loft make sure it is
somewhere it couldn't start a fire - a mate had one is his loft and it
melted one day...



Andy Wade April 17th 12 01:04 AM

Line powered distribution amp
 
On 16/04/2012 13:34, Ray wrote:
[...] I was wondering if anyone sells a line powered distribution amp
that also passes the power through to the mast head?


Have a look at the Proception proAMP310X,
http://www.blake-uk.com/proamp310.aspx

--
Andy

Woody[_3_] April 19th 12 09:34 PM

Line powered distribution amp
 
"Ray" wrote in message
...
My parents currently have a single TV in their lounge connected
via a
power supply to a mast head amp and aerial.
They now wish to put a TV in the bedroom of their bungalow and
wanted
to put a splitter in the loft to feed it. I am not sure that
their
signal is strong enough to be split with a passive splitter so
was
thinking of a two-way distribution amp in the loft. There isn't
a
convenient mains supply in the loft and, as the coax is already
powered for the mast head, I was wondering if anyone sells a
line
powered distribution amp that also passes the power through to
the
mast head?



Screwfix do a Labgear one-in two-out masthead amp that can be
powered up either leg - and from personal experience I can tell
you they work provided you don't need to much gain.



--
Woody

harrogate three at ntlworld dot com




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