English: Ing. Jaroslav Kleiner (* February 15, 1904 Lužná u Rakovníka - February 13, 1942 Mauthausen concentration camp) was the head of the technical operation of Czech Radio during the Protectorate of Bohemia and Moravia. He was married to his wife Antonia Kleiner, née Steinitz (Štainicová) (* 23 March 1901 Prague - 23 August 1982 Prague) since 1927. Jaroslav Kleiner allegedly had information about the actions of the German emigrant Ing. Rolf Formis. He was illegally broadcasting from the Záhoří Hotel near Štěchovice at the turn of 1934/1935 and was murdered by Heydrich's agents. During the German occupation of Bohemia, Moravia and Silesia, Ing. Jaroslav Kleiner joined the ranks of the anti-German resistance as a top representative of the Central Leadership of the Home Resistance (ÚVOD), he also worked closely with Associate Professor Vladimír Krajina (1905-1993), JUDr. Rudolf Mareš (1909-1944) and Air Force Major RNDr. Josef Jedlička (* 9 September 1897 Budapest - 30 June 1942 Prague). Jaroslav Kleiner was arrested by the Gestapo on 16 October 1941 and on 19 January 1942 he was sentenced to death in absentia by a German martial court. He was deported to the Mauthausen concentration camp on 6 February 1942. He was executed there on Friday, 13 February 1942. His wife Antonia Kleiner survived her imprisonment in the Nazi prisons and lived to see the end of the Second World War. After the communist coup in Czechoslovakia in February 1948, she was arrested and sentenced to life imprisonment in the trial of JUDr. Milada Horáková (1901-1950).