RobRich, I moved your post to the Utility section because transmissions on the HF-GCS network are not numbers stations or numbers station related. Yeah, a lot of people kind of make that leap that because they are letters and numbers and encoded that they are numbers, but they really are not. As known and understood (purpose, if not content) military transmissions they are one of the definitions of Utility (milcomm), they just happen to be encoded in such a way to sound kind of numbers’ish.
T!