Battery radio `` KUB-4 ''.
Receiving and transmitting radio equipment.Since 1930, the battery-type radio receiver "KUB-4" has been produced by the Leningrad Plant named after V.I. Kozitsky. The radio receiver `` KUB-4 '' (developed by the Shortwave Strike Brigade 4-tube) is a semi-professional receiver with direct amplification and is designed to work on transmitting and receiving radio stations of low-level communication and for receiving short-wave radio broadcasting stations. The receiver is powered by direct current sources. It has one high frequency amplification stage, a regenerative detector and two low frequency amplification stages. In the early 40s, the plant consistently produced several receiver options for use in the army and navy. The purpose of such receivers was determined by the letter after the number 4, for example, `` KUB-4M '' - the sea version.
