3B-17 1968
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Radio "3B-17" was produced presumably since 1968. It is designed to receive broadcasts of radio stations when operating on spacecraft. The kit includes a radio, transient antenna box and loudspeaker. The receiver is built on transistors and semiconductor diodes according to a superheterodyne circuit and operates in the mid-wave range and two short-wave subbands. As a power source, a battery with a radioactive element is used, which is not afraid of cosmic radiation, temperature difference and does not need to be recharged.
Information from collection of Valery Khartchenko