Comment Re:Numbers stations (Score 1) 14
The only way it could make sense is if you use the broadcast data against a one-time pad and then you have a key to decrypt some other data, however distributed.
There aren't enough unique messages to be the data payload itself. Regular key rotation makes some sense.
Instead of a key it could be a pointer to another data source too. Frequency, satellite channel, URL, whatever.
It does seem premature to conclude the content. No doubt there are many other possibilities.