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The stereo radio in stereo phones "Echo-601-stereo" since 1984 produced Sarapulsky radio plant.
The receiver is designed to receive mono and stereo transmissions of radio stations in the VHF band of 65.8 ... 73 MHz.
Reception is made on a whip antenna.
The receiver has: smooth tuning;
separate volume control;
jacks for connecting phones to external program sources, an external power amplifier, and a tape recorder for recording.
Power supply - Krona-VTs battery.
Specifications: real sensitivity 12 uV;
maximum output power 2x2 mW;
rated power of stereo phones 1 mW;
the frequency range on the LAN - 50 ... 12500 Hz;
frequency range of stereo phones 20 ... 20,000 Hz;
output voltage for tape recorder to record 20 mV;
current consumption 10 mA.
Dimensions of stereo telephones 220x185x100 mm.
Weight 700 gr.