I used a multimo dish in the alps this year between two mountains, no problems, they are a bit more expensive than the bigger "regular" type dishes, but they are light and take up little room.
I use a 80cm dish which works excellent throughout Germany, however from south of Venice I coould only pick up C4 and C5 on freeview, but that was through trees
We have used a 65cm Trax dish from the far West Oleron, to the East close to Lausanne and down South in the Pyrenees at Sait-Jean-Pied-de-Port. Throughout that area we have always obtained a good viable signal with one exception during a very heavy thunderstorm where for seconds we lost the signal.
And its worked right up North in the UK at St Neots!
Just come back from Carcassonne and the 54cm dish worked fine throughout France. Last year we were in the Montagne Noir and even with trees and big hills it was fine.
we have used our maplins 39 cm dish in brittany for quite a few years with no problems. i have changed the receiver from the maplins one to a new freesat hd one and again the 39 cm dish works fine. it is a bit tricky to set up due to its small size and we have found that for some reason it picks up the tv channels fine but wont receive any radio channels, my brother in law is a sky engineer and he tells me the radio channels are more than likely a lower power so the small dish is just too small. he has given me a dish that is the same size as a standard sky dish but apparently has a better collection area and lnb for low signal area's, im off to france next week again so i will try it on my van and report back if it is better.
HI DEREK BRAD,we have just come back from france we bought a 88cm dish and everything you require to watch tv abroad,we bought the complete package for
A 60 cm dish will work fine throughout France and to some degree in quite a lot of Spain (with less chanels). See David Sullivans website for all the details and how to select the southern beam on Astra 2 if you go far enough south to need it.