https://en.wikibooks.org/wiki/History_of_wireless_telegraphy_and_broadcasting_in_Australia/Topical/Publications/Wireless_Weekly/Issues/1925_08_28
WS, ZN. 3—BQ, CB, RY, UI, UX, XO. 4—CK, CM, HB. S—AC, RM. 6—AM. 7—BH, GD, JB, PF. U.S.A.: IFX, 6UK, 6XD, 9TC. Special: KEL, KIE, KIO, NEDJ, NRRL, VIS,