hat
Sistèm deziyasyon sa a te dakò nan Konferans Radyo Administratif Mondyal 1979 (WARC 79), e li te monte nan Règleman yo Radyo ki te vini nan fòs sou 1 Janvye 1982. Yon sistèm deziyasyon ki sanble yo te itilize anba règleman anvan radyo.
eng
This designation system was agreed at the 1979 World Administrative Radio Conference (WARC 79), and gave rise to the Radio Regulations that came into force on 1 January 1982. A similar designation system had been in use under prior Radio Regulations.