The first trial transmission took place on February 1, 1925, from a broadcasting station in Warsaw operated by a now-defunct private company called Polish Radio Technical Society (PTR).
The historic first words aired were solemnly delivered by the company's director, Roman Rudniewski: "This is the trial radio broadcasting station of the Polish Radio Technical Society on the 385-metre wave band."
Roman Rudniewski. Photo: Narodowe Archiwum Cyfrowe/NAC
This technical experiment paved the way for the official establishment of Polish Radio on August 18, 1925.
Regular programming officially began on April 18, 1926, marking the start of a rich legacy in Polish media.
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Source: IAR, polskieradio.pl/polskieradio.pl