In autumn 1918, shortly after the war, these experts started organizing Polish radio.
On 3 November 1918, in Kraków, a field station, previously used by the Austrian army, sent the first Polish radio signals.
In April an Act of Parliament was passed that, among other things, legalized buying, selling, and operating radio equipment by private citizens and businesses; on 10 October the Minister of Industry and Trade issued regulations that set out conditions of obtaining broadcasting licenses and running radio stations.
These included: 1927 - Kraków and Katowice 1928 - Wilno (see: Polish Radio Wilno) (This was established at the beginning of 1928) 1928 - Poznań (This was established in mid-1928) 1930 - Two additional stations in Lwów (see: Polish Radio Lwów) and Łódź were added.
At the same time, Polskie Radio increased power of stations in Wilno and Lwów to 16 kilowatts.