Damn, I wonder what countries my EDC kit could get me arrested in. I often carry one of those around, it's a lot of fun to listen in on ATC or just scan the spectrum for interesting signals.
AMPS is completely gone now, and that provision of the ECPA hasn't been enforced against individuals in a long time as far as I'm aware. But it's still on the books. ("When there aren't enough criminals, one makes them.")
They used to be illegal in Germany (along with wifi-specific sniffers): is this still the case?