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Radio Record-53 and Record-53M from 1953 and 1954 produced Berdsk and Irkutsk radio factories. Receiver '' Record-53 '' - upgrade of the previous model '' Record-52 ''. It differs from its predecessor in a modified appearance. Internal changes affected the low-frequency part of the circuit and the replacement of the loudspeaker from 1GD-1 to 0.5GD-2, and later to 1GD-5. '' Record-53 '' network five-lamp superheterodyne, assembled on metal series lamps. In the frequency converter used lamp 6A7. In the cascade UPCH lamp 6KZ. Detection, AGC and pre-amplification of the woofer are carried out by a 6G2 lamp. In the final stage of the woofer there is a lamp 6П6С. Kenotron - 6TS5S. There are three control knobs on the front panel of the receiver: the left knob is the power switch and volume control, the knob in the center serves for setting, and the right knob for switching ranges and turning on the "pickup" mode. The radio receiver is designed for power supply from an alternating current network of 110, 127 or 220 V. Ranges: DV 150 ... 415 KHz, CB 520 ... 1600 KHz, KV 3.95 ... 12.1 MHz. IF 465 kHz. Sensitivity in LW, MW 300mkV, KV 500 mV. The adjacent channel selectivity is 20dB. Output power 0.5 watts. The band of reproduced sound frequencies is 150 ... 3500 Hz. Power consumption 40 watts. Dimensions of the receiver 440x272x200 mm. Weight 5.8 kg. "Record-53M" has design, construction, scheme and characteristics as well as receiver Record-53. But there are also changes that have affected the low-frequency part of the model circuit. A decoupling filter is inserted into the detector circuit. Instead of an autotransformer, a transformer is used. Introduced in the anode circuit of the terminal lamp C31 is included in the circuit when the mode is set to "Pickup".