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Radio set to the tape recorder "Efir" from the 1st quarter of 1978 was produced by the Zaporozhye PO "Gamma". From the radio constructor (a set of radio components and assemblies) it is possible to assemble a radio set-top box "Ether", which, together with the amplifier of a portable tape recorder, made it possible to receive radio stations in the ST band. An interesting program can be recorded on tape. The sensitivity of the set-top box is 10 mV / m. 8 db selectivity. Powered by the battery '' Krona ''. Weight 150 gr. Price 4 rubles.