Crack the code?

Cecil's Columns/Staff Reports
1

I sure seem to recall a Cecil column on this, so I’m posting this here. Maybe it’s a Weird Earl instead …

(The search engine came up with zero hits for the word “radio” … ya gotta be kidding!)

Remember those radio stations that just broadcast numbers? Now you can get a large number of them on CD at The CONET Project.

There’s a challenge too … The Numbers Station Crack Challenge Home Page.

2

Probably this one:

Who operates those weird “numbers stations” on shortwave radio?

3

You may be thinking of Chapter 25 of Big Secrets by William Poundstone, “Secret Radio Frequencies.”

4

My mistake.