User:MeadowsJump42

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