Hi Compo, have a look at this thread, whilst there are no replies from Austria, there are a couple from Munich (2 hours drive from my favourite summer skiing, Hintertux). It would appear that a 90cm or 1 Metre dish will get you everything in that area, which is close to Innsbruck.
http://www.satellites.co.uk/scripts/webforum/DCForumID23/305.html
Rolf