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The radio detector "Kharkov" since 1928 produced the Kharkov plant "Ukrainradio". The receiver has no name, so conditionally let it be "Kharkov". Dual radio receiver, with a main contour coil and switchable taps and coupling coil. The model uses a capacitor of a disconnected capacity with a celluloid dielectric. The connection of the detector with the main circuit is switchable, hopping. The range of received waves is 300 ... 1800 meters. The price of the receiver is 3 rubles.