Satellite dish

[Suetheramble]

I have (again) been approached by a company wishing to update a sat. dish to run a sky plus box seving 20 flats.
They installed the original system some 5 years ago and now advise me a 2nd cable is now needed to upgrade the head end(power) The company state a second cable is required for the sky plus box to work to its full capabilities.
Whats this all about in simple terms please?

[Buenchico]

It's OK, they're not conning you!

Sky Plus boxes have two independent tuners, each of which requires a completely separate feed from the satellite dish. So a fresh LNB (the 'sticking out bit' on the dish) is required, together with a second cable to carry the extra signal.

Chris