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The radio battery "Iskra" in 1953 was modernized and produced by the Alexander Radio Factory under the same name "Iskra" or with the addition of the figures "Iskra-53". Metal case replaced by bakelite. A filter was introduced into the circuitry to reduce noise in the image channel, which made the selectivity become 24 dB. Has been upgraded heterodyne. The inverter is the same, 110 kHz. The auto-adjustment of the bias on the grid of the terminal cascade has been significantly changed to improve efficiency. A new loudspeaker is used - 0.5GD-5 or 1GD-7. A new KPI has been applied and the scale has become inverted. Instead of an oblique scale, the scale became straighter with a different pattern, for which the design of the chassis of the receiver was changed; According to other parameters, the receiver repeats the predecessor. The radio was produced until 1963.