Z code
For the virtual machine language introduced by Infocom, see the article under Z-machine.
Z Code (like Q Code and X Code) is a set of codes used in CW, TTY and RTTY radio communication. Actually, there are different sets of Z-codes: one originally developed by Cable & Wireless Ltd. for commercial communications in the early days of wire and radio communications, another one independently developed by NATO forces later for military needs and use (published in ACP-131), and there are other set of codes internally used by USSR's military and other operating agencies. The old C&W Z Codes are not widely used today.
| Code | Meaning |
|---|---|
| ZAL | Alter your wavelength |
| ZAP | Acknowledge, please |
| ZBK | Are you receiving my traffic clear? |
| ZBK1 | I am receiving your traffic clear |
| ZBK2 | I am receiving your traffic garbled |
| ZSF | Send faster |
| ZRJ | Check Your |
| ZTI1 | Receiver |
| ZTI2 | Transmitter |
| ZBW # | Change to backup frequency # |
In this example, the ZBK/1/2 is a Z code from the NATO military set, while the others are old C&W Z-codes. A lot of the old C&W codes are derived from mnemonics (ZAL = (a)lter wave(l)ength, ZAP = (a)ck (p)lease, ZSF = (s)end (f)aster, etc),
See also: Common Morse code abbreviations in the Morse code article
External links
- VE3LXV's Z-Code Page - which is a verbatim copy from this original source: www.kloth.net/radio/zcodes.php