Operating signals are a type of brevity code used in operational communication among radio and telegraph operators. For example:

  • Prosigns for Morse code
  • 92 Code: telegraph brevity codes
  • Q code: initially developed for commercial radiotelegraph communication and adopted by other radio services
  • QN Signals: published by the ARRL and used in Amateur radio
  • R and S brevity codes: published by the British Post Office in 1908 for coastal wireless stations and ships, superseded in 1912 by Q codes[1]
  • X code: used by European military services in wireless telegraphy
  • Z code: used in early radiotelegraph communication

See also

References

  1. Anderson, Scott (31 July 2002). "Pre-1912 Brevity Codes".
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