Program I began test transmissions on 1 February 1925, and began regular transmissions on 18 April 1926 (as Polskie Radio Warszawa), one year after Polskie Radio was founded.

In 1924 the Post, Telegraph, and Telephone Act was passed, and in February of the following year, a broadcasting station built already in Poland started operation.

In 1935, the Polish government bought 96% of its shares and so the radio became the property of the state.

[2] Jedynka broadcasts a program of universal character, addressed to a wide range of listeners, distinguished by a large amount of information, which is prepared, among other things, by the News Editorial Board.

Jedynka's total reception range in the VHF band (as of July 2012) covered 92.33% of the country's population and 90.19% of Poland's area.