I’ll bet you have to be a good party member or at least NEVER have criticized the system.
Most likely ALL radio frequencies are monitored by government agents.
The Soviet Union and Eastern Europe allowed ham radio as a sport and training activity with strict guidelines for on air contact.
Yes my Father-in-law got QSL-cards from Czechoslovakia back in the early 60s.
I’m convinced the CIA has me on a list because I sent a Reception report to Radio Havana Cuba back in the day and got back a QSL card from them.