Freeview, DAB and FM aerial on one mast
 

"jasee" wrote in message
...
Owain wrote:
jasee wrote:
And if you put a spare cable (or 4) in now you can also pipe
satellite through the (right sort of) loftbox
How can you pipe a quad lnb through one output? (That seems to be the
implication)
If such a device exists, I'd be interested in a link.

You use a multiswitch with each receiver having a dedicated cable
backl to the multiswitch, but some multiswitches also allow VHF/UHF
integration to the same cable
http://www.brymar.co.uk/acatalog/Dom...tribution.html

Thanks but you need a faceplate with four connections at least if you want
skyplus/ hd sky which doesn't AFAICT seem to be available (don't think
it'll work if both sats are combined)



I used a Triax loftbox.
http://www.satcure.co.uk/tech/loftbox4.htm
Scroll down to the system wiring diagram.

This has 3 RF inputs: UHF, FM, and DAB.
These are fed from 3 seperate aerials on the mast.
There are also 4 Sat inputs, LNB1 thru 4.

As with most loft box designs, the 3 RF signals are muxed along with LNB1
and sent down to the main faceplate in the living room. This has a de-mux
and privovides Sat1, UHF and FM/DAB outlets. There is then a second wire
running back from the main faceplate to the loftbox. The idea is that the
RF modulated output of the sat box is added into the signal along with the
other channels. This looped-back signal containing the satbox RF out is
the input to the distribution amp portion of the loftbox, feed to all the
other rooms. This second uplink cable from the master faceplate also has
LNB2 muxed into it as a down-link, thus providing a Sat2 outlet in the
living room for a skyplus type system requiring 2 sat inputs.

The remaining LNBs, LNB3 and LNB4 are muxed to 2 of the bedroom outlets, so
in theory you could have sat recievers in 2 of the bedrooms, the others
would have to make do with the RF out from the satbox in the living room.
You could also add magic-eye satbox remote extenders to these rooms if you
wanted to.

--
Ron

Freeview, DAB and FM aerial on one mast
 

"jasee" wrote in message
...
Owain wrote:
Marky P wrote:
... then separate cables from the aerials to a loftbox
distribution amplifier might be more logical.
Because the loftbox or other amplifier will have three separate
inputs.
As the others have said, if you're distributing using a loftbox, have
three separate cables going into the loft and into the 3 inputs on
the loftbox and then distribute the combined signal throughout the
house.

And if you put a spare cable (or 4) in now you can also pipe satellite
^^^^^
through the (right sort of) loftbox

How can you pipe a quad lnb through one output? (That seems to be the
implication)
If such a device exists, I'd be interested in a link.

http://www.emp-centauri.cz/products....page=p170-cp-8

Typically they want quattro LNB's, but the larger ones have a switch for two
of the inputs to use quad LNB's instead.

Freeview, DAB and FM aerial on one mast
 

"jasee" wrote in message
...
Owain wrote:
jasee wrote:
And if you put a spare cable (or 4) in now you can also pipe
satellite through the (right sort of) loftbox
How can you pipe a quad lnb through one output? (That seems to be the
implication)
If such a device exists, I'd be interested in a link.

You use a multiswitch with each receiver having a dedicated cable
backl to the multiswitch, but some multiswitches also allow VHF/UHF
integration to the same cable
http://www.brymar.co.uk/acatalog/Dom...tribution.html

Thanks but you need a faceplate with four connections at least if you want
skyplus/ hd sky which doesn't AFAICT seem to be available (don't think
it'll work if both sats are combined)


A fairly standard arrangement is

Dish & LNB Aerial(s) [Dish & LNB...]
|||| | ||||
Box
|
triplex plate
| | |
TV FM Sat

If you want two satellite outputs then you will need two cables to the plate
because the sat TV boxes send voltages, tones and Disecq signals back up the
cable.

$ky is dealt with by making the 28E LNB the first on the distribution
switch.