Riga, Valnu 2 (Old City). Activity of firm began with trade in radiocomponents of foreign manufacture. In a consequence has started to make fine parties of switches of ranges of an original design and other accessories to radio amateurs. Approximately small-scale manufacture of radio receivers has begun with 1935 year. In 1940 year the firm has been nationalized and incorporated with larger also nationalized, firm "Photo-radio-Centrale A.Leibovic". Aggregated firms have been named "Radiopionieris".