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Detector radio "Proletary" since 1925 produced the Leningrad Telephone and Telegraph Plant.
Kulakova.
Radio receiver design Ing.
E.Ya. Borusevich was one of the simplest in design and configuration.
The model was massive and cheap.
The radio contains a minimum of parts: a coil with a slider and two capacitors.
An antenna, grounding, crystal detector and headphones are connected to the external sockets of the radio receiver.
The range of received radio waves is 300 ... 1500 meters.
With a good antenna and grounding, a reliable range of reception reached 100 km or more.
Since 1925, the plant also produced P-2 and L.D.P. radios
in design and appearance similar to the Proletarian receiver.
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