Radios `` Rosinka '' and `` Rosinka-2 ''.

Portable radio receivers and radios on p / p.DomesticSmall-sized radios "Rosinka" and "Rosinka-2" are experimentally developed and produced in 1965 by the Leningrad IRPA. Transistor miniature radio receiver "Rosinka" - designed to receive programs of radio broadcasting stations in the medium wave range. The radio receiver is built according to the direct amplification circuit with seven transistors and one semiconductor diode. The power source is two batteries, with a total voltage of 2.4 V. The operating time of the radio receiver without recharging the batteries is about 10 hours. The range of received frequencies is 525 ... 1605 kHz. Sensitivity - 10 mV / m. Selectivity for s / c - 12 dB. Rated output power 25 mW. The dimensions of the radio are 45x40x16.5 mm. Weight 50 gr. The Rosinka-2 radio receiver differs from the Rosinka receiver only in the range of long waves. The production of the Rosinka and Rosinka-2 radios was limited.