Miniature transistor radio "Micro".
Portable radio receivers and radios on p / p.DomesticSince the beginning of 1965, the miniature transistor radio "Micro" has been produced by the Zelenograd plant "Angstrem" and since the fall of 1965 by the Minsk Radio Plant. The Micro radio receiver is designed to operate in the DV and SV bands. The sensitivity of the radio is 35 mV / m. Selectivity on the adjacent channel 6 ... 10 dB. Output power 0.5 mW. Powered by a 1.2 V battery. Current consumption 5 mA. The dimensions of the receiver are 45x30x13 mm, the weight is 27 grams. The radio has a power off knob, tuning knob, and a band switch. The receiver is assembled according to the direct amplification scheme on 6 transistors of the GT310B, V type. The receiver has three high-frequency and two low-frequency amplification stages. The output stage is loaded on the TM-2M telephone. In a radio receiver, six layers of various materials are applied through special stencils on a sitall board, polished to a high class of purity at a high vacuum, from which resistances, conductors, contact pads, capacitor plates and insulation are formed. The transistors are mounted on a separate board made of foil-clad fiberglass. The "Micro" radio was produced for sale in the USSR, and in export performance and for sale in a number of socialist countries under the names "Micro" and "Astrad Orion".
