| Re: which dish for free sat and HD
A quad-output LNB has four independent "universal" outputs to feed up to four satellite tuners.
A Dual LNB has two feedhorns and usually one output, with the satellite being selected by a pulsed 22kHz DiSEqC signal from the receiver. But you probably meant "twin-output" LNB, which has two independent "universal" outputs.
It's fairly easy and common to fit three LNBs on an 80cm dish to receive signals from Astra-2, Astra-1 and HotBird. If that will get all the programmes you are likely to need then go for it. Use single-output LNBs unless you require more than one feed for each satellite. A DiSEqC switch can be used to select the required feed.
If those satellites won't suffice then a motor-driven dish will be needed. This will normally use a DiSEqC controlled horizon-to-horizon motor. In theory, this is easy to set up but a lot of people have trouble in understanding the principles. The receiver must have DiSEqC capabilities and, preferably, include USALS software.
That's it in brief. Now you can go and search for those key words and learn more about it.
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