Three-program receiver `` Crystal ''.
Radiols and receivers p / p stationary.DomesticThe stationary transistor radio "Kristall" was developed at the beginning of 1958 by the Leningrad NIIRPA im. A.S. Popov. A distinctive feature of the Kristall receiver was power from a small-sized solar battery together with a built-in 6 V battery. When the receiver was operating no more than two hours a day when it was turned off, the battery was recharged from a solar battery in normal room daylight. If it was necessary to listen to the receiver for a long time, it was necessary to direct the light of the sun or a 60 W table lamp to the solar battery. The receiver is assembled on eight P-1 and P-6 transistors. Ranges DV and SV. When working with an external antenna, the receiver sensitivity is 800 μV. Adjacent channel selectivity is about 14 dB. The nominal output power of the low-frequency amplifier of the receiver is 30 mW. Sound pressure frequency range 200 ... 4000 Hz. Receiver dimensions 290x175x78 mm. Weight 770 gr.
