I stumbled on the whole thing when The Conet Project was re-released ('03-'04?) and I saw something on-line about it. Picked it up (it's again out
of print) and was immediately taken with how spooky some of this stuff is. Not just how it sounds (staticy, far away, like EVP recordings almost) but
also in how real it is.
For the most part, the message in the broadcast is almost unknowable (one-time pads, etc.). The company that put out The Conet Project actually had a
challenge to anyone who could decipher any of the messages - and I don't think that anyone ever did. That might not mean anything, really, but it
just adds to the mystery of the entire subject.
There's a board that posts the particulars of these broadcasts daily. It's totally driven by what's actually being heard -
www.spynumbers.com... - There hasn't been a lot of activity lately (except for the Cuban stations who broadcast daily and can be heard as far
away as Australia (and all over the US). There's also some information there (including samples).
After reading about these for so long - there's nothing like hearing one for the first time. Very, very spooky. The Cuban (presumably) broadcasts
are regular and strong enough that anyone can listen in.
In the end, will stuff like the Cuban broadcasts turn out to be Morse practice sessions for DXers and Ham operators? Maybe. There's a lot of
evidence that they aren't that simple.
Fun (real) spoooky stuff.