Network tube radio receiver `` Kolster Brandes 321 ''.
Tube radios.ForeignThe network tube radio "Kolster Brandes 321" has been produced since 1931 by the company "Kolster Brandes", Great Britain. The radio receiver is built according to a regenerative scheme on four radio tubes, one of which is a rectifier. The model has two controls for a rough and smooth approach to the regeneration threshold. The radio receiver operates in the long and medium wave ranges with overlapping margins. The radio is powered by an alternating current network with a voltage of 180, 210 and 250 volts (switchable). The speaker uses a loudspeaker with a diameter of 20.3 cm. The maximum output power is 1.5 W. The dimensions of the radio are 368 x 394 x 203 mm. Weight is about 5 kg.
