Portable experimental transistor radio "Crystal".
Portable radio receivers and radios on p / p.DomesticThe portable transistor radio "Kristall" in 1962 was developed and experimentally produced by the Leningrad plant named after Kozitsky. Rural residents have been waiting for the radio for a long time. Portable, economical in power supply, the radio tape recorder will become indispensable for vacationers. Briefly about the technical parameters of the Kristall radio: The radio is entirely assembled on transistors. The radio receiver of the model is designed to work in the ranges of long and medium waves. Sensitivity in the range of DV - 2.5, SV - 1.2 mV / m. Adjacent channel selectivity is about - 20 dB. The range of effectively reproduced sound frequencies when playing gramophone records is 200 ... 7000 Hz. The nominal output power of the radio amplifier is about 150 mW. The radio player can play a record at 33, 45 and 78 rpm. A loudspeaker of the 1GD-20 type is used in the radio. The radio is powered by six elements 373 Saturn.