home wiring setup

[nvingo]

LNBs:
Quad, four independantly-controlled LNBs in one unit - looks like one LNB with four outlets. Each outlet can supply any permutation of Horizontal and Vertical polarisation and low or high tuning band.
Quattro, (guess) a single unit containing four independant LNBs, each preset to one of the four permutations and requiring the use of a multiswitch to supply each receiver with the requested siganl.

Multiswitch enables the use of five or more tuners (receivers) from a quad LNB, or one or more tuners from a quattro, up to the limit of available outputs.

Diseqc switch. Diseqc is the control signal embedded in the 22khz tone that a receiver can use to signal a switch or motor. So instead of running a coax for the LNB, and separate power and sensor wires from a motor the whole lot is signalled digitally within the single coax. A common use is to choose between two LNBs, either a monoblock which is two LNBs and a diseqc switch, preset for adjacent satellites, or any two LNBs wired into a diseqc switch so the receiver can choose between them.

One setup in my neighbourhood has two quad LNBs on the arm of a approx 1m dish, and four diseqc switches mounted on the wall near the bracket - he can feed either of two satellites to up to four receivers.

[Robbo]

Originally Posted by jonathan399

can you recommend any intelligient retailer?

The two I was thinking of are 'satcure' and 'satellitesuperstore'. I have only used 'satcure', but from the fair amount of technical information on both sites, they should be able to provide the specific advice for the actual products they sell.

Yes, basically- Quattro LNBs are for multiswitches.
Quad LNBs can't normally be used with multiswitches, but can feed into Diseqc switches.

Diseqc switches- used to switched between satellite feeds to one receiver.

Multiswitches- used to feed one of more satellite feeds to more than one receiver.

I don't think you can combine the two, but for small configurations you can often use either diseqc switches of a multiswitch, whichever is cheapest or most convenient.

[nvingo]

Originally Posted by robbo71

Diseqc switches- used to switched between satellite feeds to one receiver.

Multiswitches- used to feed one of more satellite feeds to more than one receiver.

I don't think you can combine the two, but for small configurations you can often use either diseqc switches of a multiswitch, whichever is cheapest or most convenient.

I don't see why a diseqc switch couldn't be used downstream of a multiswitch, the receiver or diseqc switch should see the output from a multiswitch as equivalent to an LNB - and should be able to choose from eg. a multiswitch distributing 28.2E and an LNB aimed at 19E, or two multiswitches distributing different satellites.

[Robbo]

Originally Posted by nvingo

I don't see why a diseqc switch couldn't be used downstream of a multiswitch, the receiver or diseqc switch should see the output from a multiswitch as equivalent to an LNB - and should be able to choose from eg. a multiswitch distributing 28.2E and an LNB aimed at 19E, or two multiswitches distributing different satellites.

It is possible nvingo, but I don't know. There can be problems when trying to cascade Diseqc switches using the same specific protocol.

[gordie]

If you wish to use more than one dish on a multi RX set-up you can get 9 core (2 sat) or 17 core (4sat) variants of multi-switches the only problem for a domestic install is the cost...

If you only want multi-sat in one room and syandard 'Sky' in others then the multi-switch / single diseq switch down-line may be a better (more economical) soluation..

either way if you are just wiring at this stage ie 1st fix the recommendation would be one more cable than you could ever need.

So 4 coaxes (wf100) to main room 3 to others and at least 2 cat5e to all plus if you want to be 'future-proof' some fibre would not go amiss.

Hope that helps rather than hinders...

Rgds

Gord..>>

[nanochickin]

Glad to see you got it working them mate

I like the idea with the Screwfix modular plates



Nano

[jonathan399]

Thanks for the info footielad, i was looking at the screwfix gear myself. So you reckon its good stuff then?
Am i right in saying that you get your signals for sat1 and sat 2 down one line.... so you can run a sky plus from one lead? They do the rj45 module too don't they?
Can sky HD be run of this set up too?

Where did you get your multiswitch from? Cost?

[nvingo]

Originally Posted by footylad

a Vision V9 Mutliswitch which allowed me to feed both satelites down one wire

Originally Posted by jonathan399

Am i right in saying that you get your signals for sat1 and sat 2 down one line....

He does,

Originally Posted by jonathan399

so you can run a sky plus from one lead?

No. The one tuner can choose one of the two satellites by asking the multiswitch to connect them to the downlead - one at any time. Sky+ requires two simultaneous feeds, ie. two downleads (and two outputs from the multiswitch if you go that route).