Originally Posted by
Sideshow Bob
I remember walking into Kinloss Ops one day, for a local Maritime Crew Training sortie, to find we'd been allocated the 3-cipher Sierra Zero Sierra; the Captain obviously requested a change before we left (not that Maritime crews are superstitious about these things or anything lol).
I think it was a 4 character callsign. We used the same code book as the navy but in some exercises they encrypted that too. Ark on one exercise had callsign slant slant zero slant //0/ The abbreviation was slant slant.
The callsign book was AMSH1707.