Cuban Spy Network broadcast caught on tape
It appears that the only one who is still truly caught up in an "archaic cold war mentality" is the Castro dictatorship in Cuba.
From Lt. Col. Chris Simmons' Cuba Confidential:
Cuban “Numbers Station” Spy Broadcast From Last Week
Standard voice pattern begins at 27 second mark, only to be repeatedly intermixed with what sounds like digital bursts.
I used to hear these all the time on my father's shortwave radio. Listened to cuban stations and listened to creepy Radio Moscow (http://www.youtube.com/watch?v=yKOii0JRiEk)