RPK-11 1941
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Radio "RPK-12" from 1941 produced the Leningrad plant "Radioman". The radio is a modernization of the radio "RPK-10" and in many respects similar to it. According to the scheme, this is a dual-circuit direct amplification receiver with regeneration, operating in the range from 200 to 2000 meters with switching. There is no other data on the receiver. The plant also produced the radio RPK-11, a practically complete analogue of the RPK-12 receiver, but without a loudspeaker. The appearance of the model was not found, perhaps it is the same, and perhaps the size of the case is slightly reduced.
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Information from collection of Valery Khartchenko