Small-sized radios "Start-2" and "Topaz-2".

Portable radio receivers and radios on p / p.DomesticSince the beginning of 1963, the Start-2 and Topaz-2 radios have been produced by the Moscow State Radio Plant Krasny Oktyabr, the Vladivostok Plant Radiopribor and the Ulyanovsk EMZ (Topaz-2). The receivers are designed for reception in the LW and MW ranges. They are assembled on 7 transistors according to the general scheme, but differ in design and power supplies. Sensitivity at DV 2.0, SV 0.5 mV / m. Selectivity on the adjacent channel 30 dB, on the mirror 26 dB. IF 465 kHz. The receivers have AGC. The frequency range is 450 ... 3000 Hz ,. Rated output power 100 mW. In the absence of a signal, the consumed current is 4.5 ma. The Start-2 receiver is powered by a Krona battery (1L), and Topaz-2 is powered by a 7D-0.1 battery or a Krona battery. The battery can be charged with the charger included in the kit. Battery life of the Krona-1L type at an average volume is about 15 hours. The receivers remain operational when the battery voltage drops to 5.6 volts. Receiver stages have temperature and mode stabilization. Installation is made on a printed circuit board made of getinax. Copolymer body. On the right side of the receiver there is a socket for an external antenna, on the left there is a socket for connecting a telephone, the loudspeaker is switched off when it is turned off. On the back cover of the Topaz-2 receiver there are two pins for connecting the charger. For carrying, the receiver is placed in a leather case with a belt. The dimensions of the Topaz-2 radio are 152x90x35 mm, the weight is 450 g, the Start-2, respectively, 142x90x35 mm and 430 g. For a long time, a sticker was put inside the rear cover of the receiver, with the inscription "Topaz" and not "Topaz-2", most likely the backlog made for the "Topaz" receiver was used. The Krasny Oktyabr radio plant also produced a set of parts and assemblies (except for the case) for self-assembly of the Topaz-2 receiver. The radio receiver "Start-2" was produced in small quantities and has not been produced since 1964.