Radio receiver `` KUB-4M ''.
Receiving and transmitting radio equipment.Since 1938, the KUB-4M radio receiver has been produced by the plant named after V.I. Kazitsky. The short-wave radio receiver "KUB-4M" (1-V-1 with regenerative detector) operates in the range from 10 to 200 meters. The ranges are switchable by replacing a set of 5 pairs of interchangeable coils. Reception of telephone and telegraph signals is possible. The radio receiver works for headphones. Power is supplied from a 4 V heating battery and a 120 V anode.