Etjud-603 1971
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The Etude-603 portable transistor radio receiver has been produced by the Minsk Radio Plant since October 1971. ,86e6f450b8cc469628ba70bf2947b049 At first, the receiver was called Etude-3, according to the design option, later Etude-603. ,86e6f450b8cc469628ba70bf2947b049 The numbers 603 mean the receiver is out of class. ,86e6f450b8cc469628ba70bf2947b049 The radio is an upgrade of the Etude-2 model, but its layout is different from its predecessor. ,86e6f450b8cc469628ba70bf2947b049 A belt in the form of a loop worn on the wrist is used for carrying. ,86e6f450b8cc469628ba70bf2947b049 The receiver uses new silicon transistors KT315 and a piezoceramic filter PF1P-11. ,86e6f450b8cc469628ba70bf2947b049 The circuit presents an opportunity to switch to integrated MS in the future (it did not work out). ,86e6f450b8cc469628ba70bf2947b049 Ranges DV and SV. ,86e6f450b8cc469628ba70bf2947b049 Sensitivity 3.0 and 2.5 mV / m. ,86e6f450b8cc469628ba70bf2947b049 Selectivity 16 dB. ,86e6f450b8cc469628ba70bf2947b049 The rated power of the ultrasonic unit is 60 mW. ,86e6f450b8cc469628ba70bf2947b049 Loudspeaker 0.1GD-13. ,86e6f450b8cc469628ba70bf2947b049 Powered by Krona battery. ,86e6f450b8cc469628ba70bf2947b049 Quiescent current 10 mA. ,86e6f450b8cc469628ba70bf2947b049 Dimensions of the model 148x80x25 mm. ,86e6f450b8cc469628ba70bf2947b049 Weight 230 gr. ,86e6f450b8cc469628ba70bf2947b049 The export receiver was called "COMIX-102". ,86e6f450b8cc469628ba70bf2947b049 ,null,ru,null,null,null,null
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Information from collection of Valery Khartchenko