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The radio car "AI-668" since 1938 produced the Moscow plant them. Sergo Ordzhonikidze (formerly Moselektrik). The receiver is a 6-tube superheterodyne with 2 ranges 150 ... 420 and 545 ... 1500 kHz and is designed to work in the car "ZIS-101". The receiver has a high sensitivity, selectivity, AGC system, volume controls and treble tone. The power supply of the model is carried out from the onboard system of a vehicle with a voltage of 6 volts. Filaments of radio tubes are fed directly from the onboard network, and anodes through a vibrator and a filter.