2 ms·

I don't know if listening to this particular signal is legal or not in Germany or anywhere else, I'm just pointing out that for the general case (as I read OP's

by anyfoo 5y ago

I don't know if listening to this particular signal is legal or not in Germany or anywhere else, I'm just pointing out that for the general case (as I read OP's sentence) it may well depend on the jurisdiction.

Aloha 5y ago
The only countries as far as I know that banned shortwave reception were the former eastern block countries and other similar regimes.