Year | Countries and territories |
1916 | United States (2XG New York City; 8MK Detroit > WWJ & 8XK Pittsburgh > KDKA 1920) |
1919 | Netherlands (PCGG The Hague; HDO Hilversum 1923) |
1920 | Argentina (LOR Buenos Aires), Canada (XWA Montreal > 9AM > CFCF) |
1921 | Australia (2CM Sydney), France (R. Tour Eiffel, Paris), Mexico (TND Monterrey) |
1922 | Brazil (SPE Rio de Janeiro),[1] Cuba (2LC Havana, followed by PWX), New Zealand (R. Dunedin > 4AB), Paraguay (CXZ-27 Asunción; ZP1 1926), Philippines (KZKZ Manila), Puerto Rico (WKAQ San Juan), United Kingdom (2MT Writtle;[2] 2LO London), Uruguay (CW90A R. Paradizábal, Montevideo;[3] CWOA 1927), Victoria (R. Melbourne) |
1923 | Belgium (R. Bruxelles), Chile (CBC R. Chilena Santiago), Czechoslovakia (Radiojournal, Prague), Germany (Funk-Stunde, Berlin), British Raj (2FV R. Club Bombay > IBC 1927), Shanghai (XRO Shanghai), South Africa (JB Johannesburg), Switzerland (2HB Lausanne)[4] |
1924 | Austria (RAVAG, Vienna), Dominican Republic (HIH Santo Domingo; HIX 1928),[5] Italy (IRO Rome URI), Luxemburg (R. Luxembourg), Newfoundland (8WMC St. John's > VOWR), Singapore (1SE AWSM > ZHI 1933),[6] Soviet Union (Moscow: RA1 Komintern, RA2 MGSPS), Spain (EAJ2 Madrid, EAJ1 Barcelona), YU: Serbia (R. Belgrade; Rakovica 1924), South Australia (R. Adelaide) |
1925 | Afghanistan (R. Kabul), Algeria (8DB Algiers), Byelorussian SSR (RA18 Minsk), Ceylon (Colombo R.), Denmark (Statsradiofonien, Copenhagen), Dutch East Indies (BRX, Batavia > NIROM),[7] Hungary (Magyar Telefonhírmondó és Rádió Rt., Budapest; wired Hírmondó 1893), Japan (JOAK Tokyo), Kwantung (JQAK Dairen), Latvia (Radiofon Riga), Norway (Kringkastingsselskapet, Oslo), Peru (OAX Lima), Portugal (P1AA Lisbon), Sweden (Radiotjänst, Stockholm), Ukrainian SSR (RA21 Kharkov), Western Australia (R. Perth) |
1926 | Armenian SSR (RA49 Yerevan), Azerbaijan SSR (RA45 Baku), Burma (2HZ R. Club Rangoon), China (XOH Harbin; XKM Nanjing 1928; XNCR Yan'an 1940); CZ: Slovakia (Radiojournal, Bratislava), Danzig (Landessender Danzig), Egypt (R. Farouk et al., Cairo),[8] El Salvador (AQM San Salvador), Estonia (R. Ringhääling, Tallinn), Finland (Yle, Helsinki; 3NB Tampere 1924), Georgian SSR (RA27 Tbilisi), Iceland (H.f. Útvarp, Reykjavík), Ireland (2RN Dublin), Lithuania (Lietuvos radijas, Kaunas), Poland (Polskie R., Warsaw), Venezuela (AYRE Caracas), YU: Croatia (R. Zagreb) |
1927 | Bolivia (CPX La Paz; CP1AA 1922), Costa Rica (TI4NRH Heredia), Kenya (VQ7LO Nairobi), Korea, South (JODK Keijo), Turkey (İstanbul Radyosu), Turkmen SSR (RA6 Ashgabat), Uzbek SSR (RA27 Tashkent)[9] |
1928 | Greece (Thessaloniki; YRE 1938), Honduras (HRB La Voz del Trópico, Tegucigalpa), Hong Kong (GOW), Morocco (R. Maroc), Pakistan (YMCA, Lahore; Karachi 1926),[10] Rumania (R. Bukarest), Taiwan under Japanese rule (JFAK Taihoku), Thailand (4PJ Bangkok), VT: Tonkin (R. Sindex, Haiphong), YU: Slovenia (R. Ljubljana), Tasmania (R. Hobart), Baja California (XEY/R. Mexicali) |
1929 | Colombia (HJN Bogotá),[11] Ecuador (El Prado, Riobamba), Réunion (R. Saint-Denis), Queensland (R. Brisbane) |