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The radio receiver battery "EKL-5" from 1933 produced the Leningrad Kozitsky plant. The radio receiver '' ECL-5 '' (with shielded lamps, produced by the Kazitsky plant, Amateur, 5-lamp) is intended for loud-speaking reception of radio stations in areas that do not have electric AC networks. The receiver is powered from batteries: filament, voltage 4 ... 5 V, anode, voltage 240 ... 160 V, grid bias, voltage 40 V. A significant drawback of the radio receiver is a very large current consumed by the filament and anode, with a large anode voltage . In the filament circuit of the lamp current is consumed about 1.5 A, and in the circuits of the anodes and the shielding grids of the lamps, with a normal for this receiver anode voltage of 240 V, about 70 mA. As a result, the operation of the receiver is expensive and possible only if there is an opportunity to systematically charge the batteries. '' ECL-5 '' has great sensitivity. On the radio "EKL-5" you can take a fairly large number of long-range stations in the range of 200 ... 2500 meters, the radio reception level of which is higher than the level of interference. Although the radio "EKL-5" and was called amateur, it was intended primarily for radio broadcasting nodes.