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Search terms | radio history, history of radio in the world, early radio, wireless telegraph, why the letters k and w?, music over phone line, yellow and red pennant, 830 khz to meters, sending receiving telegraphs from moving train, advertising by radio cannot be done |
Additional terms | уфкднкфвшщршыещкнюгы, цццюуфкднкфвшщршыещкнюгы, уфкднкфвшщршыещкн, eqrlyrqdiohistory:us, zzz:eqrlyrqdiohistory:us, eqrlyrqdiohistory, קשרךטרשגןםיןדאםרטץוד, '''ץקשרךטרשגןםיןדאםרטץוד, קשרךטרשגןםיןדאםרט, ثشقمغقشيهخاهسفخقغزعس, صصصزثشقمغقشيهخاهسفخقغزعس, ثشقمغقشيهخاهسفخقغ |