“The whole country in the range of a detector” — it was a slogan of British radio operators from 1923. Six years later it was implemented by the Polish radio (Polskie Radio SA). Why a detector receiver? Why not a lamp receiver which gives better reception? There were several reasons, two of which were decisive: a much lower price and an independent source of power, which had to be important in a country like Poland where electricity was scarce in the 3rd decade of the 20th century.
The Marconi radio set is a high quality luxury battery-operated radio set produced by Polskie Zakłady Marconi S.A. This Warsaw branch of the Marconi Wireless Telegraph Company Ltd. London, the company established by the undisputed inventor of radiophony, Guglielmo Marconi, was established in 1928.
The phonograph has a spring drive mechanism and is designed to play discs that have a diameter of 10 to 25 cm at 33 rpm. It is sometimes described as the walkman of the Victorian era and the great-grandfather of the iPod. It is an example of one of the first pocket-size and movable devices for playing music.