Peter,
Perhaps you'd like to read this personal account (in Dutch) of the doings around the radar post during WW 2.
It has quite some details, but no reference to a downed Allied pilot in March 1945. Of course this doesn't rule out that something has happened then.
As a surprise, it does mention the crash of a German Fieseler Storch near the radar station! The crew apparently were a bit too overconfident while doing aerobatics and flew into the ground instead....Crew of 2 were killed in the process.
Link:
http://www.historischeverenigingleer...woerd_215.html
Groet,
Leendert