Audiovisual technologiesThe department, founded in 1999, includes turntables, tape recorders, audio equipment, transistor and tube radios.
One of the most valuable objects is a battery-powered radio Marconi 4LS/1, produced in the years 1929-1930 by the Polish Marconi Works, a subsidiary of the English company Marconi Wireless Telegraph Co. Ltd. It was a luxurious radio, and today it is a true collector's gem.
Other artefacts in the collection of the Museum of Municipal Engineering include an Echo 231 radio, a spring phonograph Mikiphone and an Anton Kresopolski Zakopane radio.
The department also collects objects related to video playback, such as projectors, film cameras, TV sets, VCRs, photographic cameras, etc.
The most interesting and valuable TV sets are Wisła, Jantar, Belweder, Koral and the Ornak projector.
Series production of TV sets began in Poland in 1956, in Warsaw Television Works, and "Wisła" was the first model produced by this plant. However, it was not a Polish design, the televisions were manufactured under a Soviet license, based on the "Avangard" model. It soon turned out that "Wisła", receiving only the three lowest channels, did not meet the needs of its users and in 1957 its production was discontinued.
"Wisła" was succeeded by "Belweder", produced since 1957, also by Warsaw Television Works. The Polish-designed television set was assembled either from Polish parts or from elements produced by well-established companies such as Philips. "Belweders" were produced until 1965.
Another valuable object stored in this department that deserves mention is the "Koral" TV set, first presented at 1961 Poznań International Fair. It was a modern, 17-inch TV set with a Polish CRT. Initially, the model was produced primarily for foreign markets, and since the turn of 1963-1964 "Koral" appeared on the domestic market. A 1964 modernisation of "Koral" resulted in the next model of TV set, the "Agat".