Operating signals: Difference between revisions

Revision as of 16:49, 8 February 2019

Revision as of 03:40, 15 October 2019

Line 5:

* [[Q code]] - initially developed for commercial radiotelegraph communication, and later adopted by other radio services, especially amateur radio. Used since circa 1909.

* [[QN Signals]] - published by the ARRL and used by [[Amateur radio]] operators to assist in the transmission of [[ARRL Radiogram]]<nowiki/>s in the [[National Traffic System]].

* R code - published by the British Post Office in 1908 for use only by British coastal wireless stations and ships licensed by the Postmaster General.<ref name=":0">{{Cite web|url=http://ac6v.com/rcode.htm|title=R - CODES AND S - CODES|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>

* S code - published by the British Post Office in 1908 for use only by British coastal wireless stations and ships licensed by the Postmaster General.<ref name=":0" />

* X code - used by European military services as a wireless telegraphy code in the 1930s and 1940s