Radio Name Game - Sandra

Sandra FM was a pirate radio station from the village of Aalten in eastern Netherlands (or at least that's where the contact address was from...who knows where they actually broadcast from.)  I cannot find a single reference to the station anywhere online and the only way I know it's from a pirate station is that someone wrote it on the back.  If you have any info on Sandra FM feel free to leave a comment.
The Dutch have a rich tradition of illegal broadcasting that continues to this day.  Last year, 1600 warnings were issued and 60 fines levied to pirate operators and landowners who allowed them to operate on their property.  Another mysterious Dutch pirate sticker can be seen here.