2023Milestones of Slovenia‘s Technical Heritage - Set

When Radio Ljubljana began broadcasting in September 1928, there was widespread demand for radio receivers. Initially these were crystal sets with an earphone which could only be used by one listener at a time. In the years that followed, radio sets with valves and loudspeakers became increasingly popular. Up until the end of the Second World War, all radios were imported from abroad. In 1946, the “Radio Industrija Nikola Tesla” factory was established in Belgrade. The following year, the new factory put
the first domestically manufactured radio broadcast receiver, the Kosmaj 47, on the market. Thanks to its low price, this radio was accessible to a broad range of listeners.