OXA, museum in Copenhagen, Denmark
OXA is a museum in Copenhagen, Denmark, housed in a small wooden building that was originally Denmark's first coastal radio station. The building, painted yellow and red, stands behind the Mastekranen on Holmen and contains vintage radio equipment and apparatus from the early days of wireless telegraphy.
The building was erected in 1908 as Denmark's first coastal radio station and was expanded in 1915. It was moved from Frederiksholm to Nyholm in 2003 and reopened as a museum.
The station's call sign OXA gave the place its name, and locals sometimes called it 'brøleaben' because its spark transmitter interfered with other radio signals. Today, volunteers run the museum and give tours, keeping the story of early wireless communication alive.
The museum is located on the Holmen naval base, so check opening hours before visiting as access may be limited. It is best reached on foot or by bike, and the area around it offers views of the harbor and historic naval buildings.
The museum displays original Marconi equipment of the same type used on the Titanic, including a triple tuner. The station's first spark transmitter had a power of 1.5 kW and could reach ships in the Mediterranean.
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