Back in the 60s or 70s, I used to hear US military chats around
8megacycles. Nothing interesting as I recall, except once when one of the
people said 'go to green' and the transmissions were suddenly encrypted.

The encryption seemed like it was the kind of thing where the voice
spectrum is broken into segments and the segments moved around.

It must have been, even then, a low-level code, since anyone with a
serious computer for the time (corporations or governments I would
guess) could have unscrambled it.

Does anyone else remember, or still hear, these kinds of non-digital voice
codes?

Il mittente di questo messaggio|The sender address of this
non corrisponde ad un utente |message is not related to a real
reale ma all'indirizzo fittizio|person but to a fake address of an
di un sistema anonimizzatore |anonymous system
Per maggiori informazioni |For more info
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