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The stationary transistor radio "Efir-M" from I quarter of 1964 was produced at the Chelyabinsk radio plant. '' Aether-M '' is a tabletop transistor radiolabel with a combined power supply from an electrical network or 6 A-373 elements with a total voltage of 9 volts. Radiol is an upgrade of '' Ether '' radio. The radio receiver is assembled on 9 transistors and 5 diodes in a superheterodyne circuit with ranges of LW, MW, and 3 KV subranges, of which 2 are stretched. Sensitivity about 30 µV. The adjacent channel selectivity is 34 dB. There is an AGC system in the radio unit. Rated output power 500 mW. Radiola reproduces the frequency band - 100 ... 4000 Hz at the reception and - 100 ... 10000 Hz when listening to the recording. Power consumption from the mains when receiving 3.5 watts. Battery pack lasts for 200 hours of work. Radiola loses records when the supply voltage drops to 6, and the reception is up to 4 volts. Dimensions of the model 500х280х330 mm, weight 15 kg. In 1966, the radiolink was modernized. Appearance and name remained the same, but the changes mainly affected the electrical circuit. Improved selectivity for mirror channels on HF, increased sensitivity, and a more efficient relay AGC was applied in the IF amplifier block.