User:MeadowsJump42

z code review (like Q Code and X Code) z code scam could be a z code set of codes utilized in CW, TTY and RTTY radio communication. Actually, there are completely different sets of zcode review: one originally developed by Cable & Wireless Ltd., zcode for business communications in the early days of wire and radio z-code communications, another one independently developed by NATO forces later for military desires and use. The NATO Z Code remains in use these days, and is published in the unclassified document ACP-131. There are different set of codes internally used by USSR's military and different operating agencies. The old C&W Z Codes aren't widely used nowadays.