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Since October 1937, the radio network receiver SVD-M has produced the Alexander Radio Plant. The all-wave ten-tube superheterodyne receiver '' SVD-M '' is an upgraded version of the receivers '' SVD '' and '' SVD-1 ''. In contrast to the licensed US radio "SVD-1", the radio "SVD-M" is considered to be entirely domestic development. The release of the receiver was facilitated by the mastering of the Svetlana plant for the production of better and more stable metal bulbs compared to glass lamps. But for the most part of the manufactured radios, except for domestic radio tubes, still, higher-quality American lamps were used. Radio "SVD-M" is assembled on a high chassis, covered with a bottom pan. Lamps, a tuner, a power transformer and electrolytic capacitors are placed on the chassis; the remaining elements are inside the chassis. Access to individual elements is difficult, since the apparatus used multi-storey installation. On the side walls of the box there are special shock absorbers, on which the receiver chassis is mounted. At the top of the box is a dynamic speaker. The body of the receiver is a veneered veneer, a rectangular wooden box. On the front side of the case there are four control knobs: the upper left - the range selector, the upper right - the volume control, the center one - the tuning knob, the knob below - the tone control and the power switch. The dual adjustment knob is equipped with a gearbox. The transfer of rotation to the shaft of the capacitor tuning is carried out by a metal spring friction clutch. The scale is round, divided into 4 subranges. Above the scale is the screen of the electron-beam indicator settings. On the back of the receiver's chassis are the terminals for connecting the adapter, antenna and ground. The rear wall provides access to a high box chassis, split design. Switching the network voltage - is carried out by interchanging the jumpers on a special block, closed with a steel sliding cover, on which the fuse is installed.The power transformer is enclosed in a metal screen. The contour coils of the UHF and the local oscillator are mounted as a separate screened block representing a separate structure attached to the chassis with four bolts. The model used the original capacitor settings - it is four-section, mounted on shock-absorbing pads and covered with a cardboard casing. The frequency converter transformers are located under the chassis and are adjusted with brass screws placed on the rear panel of the chassis. Range switch - galetny, three-board. The output transformer is also enclosed and placed on the "basket" of the loudspeaker with bias. Overall dimensions of the receiver 560x360x290 mm, weight 16 kg. The range of received frequencies: 1. The range of "A" or LW - 750 ... 2000 m (400 ... 150 kHz); 2. The range of "B" or CB - 200 ... 556 m (1500 ... 540 kHz); 3. The range of the "G" or KV-1 is 85.7 ... 33.3 m (3.5 ... 9.0 MHz); 4. The range of the "D" - KV-2 is 36.6 ... 16.7 m (8.2 ... 18.0 MHz). The intermediate frequency is 445 kHz. The output power of the receiver at the resistance is equivalent to a speaker with a nonlinear distortion factor of 10% - 3 watts. Emf sensitivity in the antenna, measured at an output power of 0.5 W: in the range A (250 kHz) - 20 μV, in the range B (1.0 MHz) - 10 μV, in the range C (6 MHz) - 20 μV, in the range G (12.0 MHz) - 30 µV. The receiver is powered by an alternating current network with a voltage of 110, 127, 220 V. The power consumed from the network does not exceed 100 watts.