Prefiksy ITU
https://www.google.com/search?q=itu+zone+map+jpg&tbm=isch&ved=2ahUKEwi8w7HF-uCCAxXJ3wIHHZsTDDgQ2-cCegQIABAA&oq=itu+zone+map+jpg&gs_lcp=CgNpbWcQAzoECCMQJ1CiC1iWHGDwKmgAcAB4AIABbIgBhgOSAQM0LjGYAQCgAQGqAQtnd3Mtd2l6LWltZ8ABAQ&sclient=img&ei=5tpiZby4Mcm_i-gPm6ewwAM&bih=947&biw=1680&rlz=1C1PRFC_enPL872PL872


http://www.kuisokov.ru/CQ-WW-DXeng.html


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