You will require a dual output LNB and a 2 input/4output multiswitch if you have more than 2 STBs to feed.
If you only have two STBs to feed then just the dual output LNB. Check with GZ user Kiwisat (Paul) he said he had some dual output LNBs on hand, if you need the multiswitch then the following link is what you need.
No if you are in an apartment there will only be a single backbone (unless to the very lattest SkyNZ spec) so all you get is Hpol, unless of course you apartment has been wired for both, which is not common in older to recent installs.
Thanks for the reply. I know that it currently doesn't work. Is there a box (or some kind of solution) that could make it work for the building or is the only solution another dish and completely new wiring? (which obviously is not a solution)
In the UK they have things available that use 2-3GHz for the second feed, and a downconverter at the other end of the single cable. Amps etc are not specced for 3GHz normally so you may be out of luck distributing it thru the buildnig.
Hi stackers which do as richard describes above are available, I suspect (dont know for sure but reading between the lines) Sky will be deploying one sometime soon for MDUs that have only one backbone feed to supply both D1 Hpol and D3 Hpol, however those two can both be stacked in the 950-2GHz band so should meet spec through most buildings distribution network, and no de-stacker is required, simply firmware.
I doubt you could raise a case for distributing D1 Vpol as their is no legit programming on it to whatch, SBS is not actually allowed to transmit here.
Hi, Sonora make one, they are about US$200 and you also need a dual output LNB. In the reciever you simply need to set the LO frequency for 11300 for Hpol and 11875 to see Vpol, no other hardware is required to de-stack.
As to how will it works or whether Sky or the body corporate for your building would approve should it cause issues with Sky services is outside of my comments.