 On February 22–24, 1930 "Polski Zwiazek Krotkofalowcow" (Polish Amateur Radio Union) was founded and professor Janusz Groszkowski of the Warsaw University of Technology was elected as its first President.World War II broke out in 1939 and amateur radio activities were ordered out of existence in Poland.It took years for PZK to be reborn on January 11, 1957 and to have amateur radio licenses being issued.