Transistor radio "Topaz".
Portable radio receivers and radios on p / p.DomesticSince the fall of 1962, the Topaz transistor radio has been produced by the Vladivostok Radiopribor plant. The radio receiver was created on the basis of the "Start" model, somewhat modernized and designed to receive radio stations in the LW and MW bands. There are seven transistors in the circuit. Sensitivity in the ranges DV - 3 mV / m, SV - 2 mV / m. Selectivity on the adjacent channel 20 ... 24 dB The receiver has an AGC. The frequency range is 450 ... 3000 Hz. Rated output power 100 mW. In the absence of a signal, the receiver draws a current of 5 mA. Powered by a 7D-0.1 rechargeable battery or Krona-1 or 2 batteries with which the receiver is supplied upon sale. When equipped with a battery, a charger is included. The assembly is carried out on a printed circuit board. The casing is made of unbreakable plastic, has a removable cover that is attached to the casing with locks and screws. The back cover has pins for charging the battery. Leather case included for carrying. Receiver dimensions 152x90x39 mm, weight 480 g. The radio is quite rare, since it was released in an amount of about 2 thousand copies.
