Moving a sky cable

ted1

anyone know the reason why sky run the cable straight from dish to box, without using Wall Plates,

I have to move the mother in Laws sky box to a new location, so the plan was to just cut the exisitng cable, terminate it in a wall plate and then run a new cable from wall plate to box.

Alos the way the dish is installed is a bit of a state. and a huge chunk was taking out of the wall when he drilled through the house. do Sky have a Quality department that do routine checks? seeems like a lot eof CowBoyhs out there.

i reckon all you need is a ladder and pair of snickers to be qualified as s sky installer.:eek:

watty

There is a problem getting depth for wall box so as to not kink cable. Also Cable TV wall plates are not suitable.

You need a deep box that the plate is double sided socket (a barrel) then put plug on existing cable and screw to rear of plate, cable must NOT be kinked.

Then satellite grade cable from front of wall plate.

Or just use the double ended socket (barrel or joiner) on its own to extend the cable.



Notice how one end is longer for mounting through a wall plate?

ted1

Cheers Watty,

of to get some f connectors and a joiner. One more question, i never understood why you need a multiple LNB as oppose to just running the signal through a booster, any chance you could shed some light??

Bazzer2

Satellite signals are received from an LNB on four different 'bands', each controlled by its own voltage and switching tone from the receiver box.
They cannot simply be split with a 'booster'. For example, a house with more than one Sky box needs a separate independent feed for each box (or two feeds per box if they are Skyplus).

ted1

cheers,

so basically the box controls the line and that is whya, as oppose to a standard cable feed.

watty

There are special LNBs (Quattro) which instead of four independent signals (Quad and Octo are regular multi cable kind) that have a connection for each of the 4 possible "bands" of tone on/off (above/below 11.7GHz) or voltage High/low (polarity). These four cables can be amplified and split with special Satellite IF signal rated amps and splitters (TV ones won't work) for up to 2000 receivers. At some point the four cables go into an indoor box called a "Multiswitch" that simulates a regular LNB connection for a Satellite receiver.

A typical basic "Multiswitch" without additional splitters and amps can take 4 groups of four cables for 4 satellites (4 x Quattro LNBs on bar on one dish, separate dishes, toriodal dish or a mix) and feed 8 PVRs or 16 regular receivers.

One of these would allow 28E Sky/Freesat, 19E Astra, 13E Hotbird and 9E Saorsat/Ka-sat all to be fed to 8 rooms each with sky HD or Humax Freesat HD PVR. Easily expanded to an entire hotel or Apartment block. The system (passive Terr Multiswitch) can take Cable TV (including broadband) or an Aerial (including FM Radio, Shortwave and DAB) also and feed it on every satellite cable. Then at room a cheap €5 Sat 900MHz Splitter splits back to Satellite cable and other cable.

Each ka-sat spot beam (as will be used by Saorsat) has only one band/polarity. So a single Ka Band LNBF can be split (with a 950MHz to 2100GHz rated part) and/or amplified. A PVR could use a single coax and €5 splitter for Saorsat only. If you wanted Freesat PVR also then you need two coax and Multiswitch or 2 x Diseqc switches to combine the satellite feeds. A Sky box will never work for Saorsat.

ted1

Thanks Watty, your a wealth of information.