Indeed. It was entertaining, if nothing else.
Used to hear numbers stations, and the Lincolnshire Poacher. There was all kinds of stuff out there. I’d lie in bed wondering what the numbers broadcasts were saying, who was saying it and to whom.
Oh my goodness . . . I had completely forgotten about them!
You'd come up on a frequency where you just heard someone counting . . . just counting. It had to be some sort of code!
Similarly, the NBC television network in the early 70s used to run these bizarre spots on Sat. morning kids' TV which was just a bunch of vowels being sounded out. I was sure that was top secret code as well!