Network tube radio receiver `` U-207 ''.
Tube radios.DomesticSince the beginning of 1950, the U-207 network lamp radio receiver has been produced by the Radiotekhnika plant in Riga. The radio set-top box "U-207" is intended for use on radio broadcasting nodes. The receiver is a three-lamp superheterodyne, with fixed settings for three radio stations, one in the LW range and two in the CB. The receiver does not have a bass amplifier and a power supply unit; for this, an amplifier and a power supply unit for the amplifier of the radio center are used. The receiver has a sensitivity of 250 μV, a selectivity of 26 dB, and a bandwidth of about 10 kHz. IF 468 kHz. The range of reproducible sound frequencies at the output of the detector is 80 ... 6000 Hz. By heating, the radio receiver consumes 1.15 A, the anode is 14 mA.