A guide to the possible uses of Unicable / Unicable 2 LNBs (Unicable 2 is also known as JESS).
You don't need a special tuner
Unicable LNBs don't need specific tuners — you can use them with a "normal" receiver such as the Technomate Nano SE, VU+ Solo 2, VU+ Duo, Xtrend 8000, GigaBlue Quad or Mutant HD51.
How Unicable differs from older LNBs
In the old days, LNBs came with a single port — one receiver only. Then came Quad LNBs (four connections), Octo LNBs (eight), and switches that needed a Quattro LNB but offered many more outputs. All of these share one limitation: they need a signal wire directly between each tuner and the LNB / multi-switch — the signal can't be split. A typical layout looks like this. 
SCR channels
Unicable / 2 LNBs send the combined signal down channels usually called SCR. Unicable 1 LNBs usually come with 4 SCR (though technically capable of more); Unicable 2 LNBs usually come in 24 or 32 SCR and are better value for money.
Before you buy
- Make sure your receiver and image support Unicable. A Freesat receiver or a TV's built-in tuner may not — in that case you'll need a Unicable LNB with legacy / universal ports.
- Unicable LNBs have a 40 mm collar. To use one on a Sky dish you'll need an adapter, and because elliptical (Sky) dishes have squashed LNBs you'll see some signal loss compared with a non-Sky dish.
- You need power-pass splitters (they only allow current one way). Make sure they support the frequencies in use — a 5–1000 MHz splitter won't work. Plan your installation and buy enough splitters up front; postage usually costs more than the splitters if you order later.
- Place splitters wherever convenient — for example in the loft where coax from several rooms meets — and combine more along the circuit as needed.
- Use good-quality cable.
Example layouts
A simple layout — this just shows you can use a Unicable LNB with a single-tuner receiver (handy if you plan to upgrade soon and the installer is already on the roof). 
Here someone has a twin-tuner receiver and a Unicable LNB but didn't buy splitters — only one tuner will receive signal, so there are limitations. 
A better use of the technology: two twin-tuner receivers, four tuners in total. Unicable lets you run one signal wire from the LNB and share it as needed. 
Hopefully this diagram shows what you can achieve. The key rule: every tuner must be assigned a unique SCR. 
