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) |
1923 | Belgium (R. Bruxelles), Chile (CBC R. Chilena Santiago), Czechoslovakia (Radiojournal, Prague), Germany (Funk-Stunde, Berlin), India (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), Luxembourg (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) |
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) |
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), Yugoslavia: 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 (JFAK Taihoku), Thailand (4PJ Bangkok), Vietnam: Tonkin (R. Sindex, Haiphong), YU: Slovenia (R. Ljubljana) |
1929 | Colombia (HJN Bogotá),[11] Ecuador (El Prado, Riobamba), Réunion (R. Saint-Denis) |