In reply to M0OYG:
I do not understand what you mean with “non full license”. Is this a kind of educational license? We do have a license type with limited access to 70cm for practice purposes, but I doubt that CEPT regulatiosn are applicable to this type of licenses.
I am not into VHF/UHF at all, but this link will lead you to a directory of Austrian repeaters (“Relais” in German): http://www.oevsv.at/export/oevsv/download/relais_neu.pdf
The number in an Austrian call sign identifies the province of the holder, respectively the QTH of a repeater. Fuschl and Schafberg are at the border of Salzburg (OE2) and Upper Austria (OE5). On top of Schafberg you should be able to catch any OE5 or OE2 repeater. The closest ones are OE2XSL, OE5XGL and OE5XFM. I am pretty sure that OE2XSL will be best to try while in Fuschl. This repeater is located on Gaisberg, which is the mountain next to the city of Salzburg with the radio tower on top. You can easily spot Gaisberg from Salzburg Airport. From the arrival building it is straight east, that is looking back accross the run way.
When operating SOTA you could try the following simplex frequencies: 145.275 (local radio club of Vöcklabruck), 145.525 (radio club of Frankenmarkt) or 145.500, which is the informal SOTA frequency. I do not know about the Salzburg radio clubs (different section).
If you need detailed topographic maps you can find them on the web here: http://www.austrianmap.at
I wonder how you want to ascend Schafberg. I did it several years ago (before there was SOTA) from the north side. It is about a 2.5 hour hike. The most comfortable way is to take the railroad from St. Wolfgang. This will take you to about 100m below the summit. Info on the touristic railroad can be found here: http://www.schafbergbahn.at/index.php?option=com_frontpage&Itemid=30 There is an english folder for download.
If the weather is fine I would go there early (whenever they start in the morning). There are long lines if you arrive late during the day. If the weather is anything else but fine I would not go at all.