Portable transistor radio "Swallow".
Portable radio receivers and radios on p / p.DomesticSince the beginning of 1961, the portable transistor radio "Lastochka" has been producing the Dnepropetrovsk radio plant. The radio is assembled on 6 transistors and operates in the DV, SV ranges. The sensitivity is 5 ... 7 and 3 ... 4 mV / m, respectively. Selectivity 12 ... 14 dB. Rated output power 60 mW. The receiver was produced in an experimental series, at the end of the year it was modernized and since 1962 it has been produced with improved characteristics and already on seven transistors. The sensitivity of the upgraded receiver in the MW and DV ranges has improved to 3 ... 4 and 1.5 ... 2.5 mV / m, respectively. Selectivity increased to 16 ... 20 dB. The rated output power has increased to 90 mW. The range of reproducible frequencies as in the previous model is 450 ... 3000 Hz. Both models are powered by a Krona battery or a 7D-0.1 rechargeable battery, in this case a charger is included. Quiescent current ~ 8 mA, at rated power 25 ... 30 mA. The receiver is designed in a plastic case. On its front part there is a tuning dial, the range switch is located on the back wall, on the side wall at the bottom left there is a volume control with a switch. Includes artificial leather case. Dimensions of the radio receiver 125x78x39mm. Its weight is 450 grams. The price of the second model is 47 rubles 15 kopecks. The design of the case of the first model is distinguished by beveled halves and latches, instead of screws. There is no circuit for the first model of the receiver.
