Radio Lover eh? It could be something like that. My guess is he's using something relatively sophisticated...just because he's a Math prof. living in Sweden.
Back in the early 80s I ran into a guy who claimed he could tell if his stereo's speaker wires were twisted around each other, his ears were so sensitive.
If you flip from CKUA to our station in about seven and a half hours, you'll be able to catch my show.
[edited to adjust the time]