Mikro 1965
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Since the beginning of 1965, the miniature transistor radio "Micro" has been producing the Zelenograd plant "Angstrem" and since the autumn of 1965 and the Minsk radio plant. Radio '' Micro '' is designed to work in the ranges of LW and ST. Radio sensitivity is 35 mV / m. The adjacent channel selectivity is 6 ... 10 dB. Output power 0.5 mW. Powered by a battery with a voltage of 1.2 V. Current consumption 5 mA. The dimensions of the receiver are 45x30x13 mm, weight is 27 grams. The radio has a power off handle, settings, and a band selector. The receiver is assembled according to the direct amplification scheme on 6 transistors of the GT310B, V type. The receiver has three stages of amplification of high frequency and two low frequencies. The output stage is loaded on the TM-2M telephone. In a radio receiver, six layers of various materials from which resistors, conductors, contact pads, capacitor plates and insulation are applied to the board are made of sitalum polished to a high purity class under high vacuum. Transistors are mounted on a separate board of foil-clad fiberglass. The radio "Micro" was produced for sale in the USSR, and in the export version and for sale to a number of socialist countries under the names "Micro" and "Astrad Orion".
Information from collection of Valery Khartchenko