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A souvenir miniature radio "Signal" from I quarter of 1990 was produced by Minsk NPK "Signal". The "Signal" radio receiver is assembled according to the direct amplification scheme on trace elements deposited on a substrate by spraying and soldering. The radio signal receiver "Signal" works in the ranges of DV 148 ... 285 kHz and CB 525 ... 1607 kHz. The real sensitivity in the range of DW 9 mV / m, SV 5 mV / m. Selectivity 10 ... 14 dB. Power supply from 2 accumulators D-0.06 or from 2 non-chargeable elements of RC-53 type. Current consumption 5 ... 6 mA. Freshly charged batteries last for 10 ... 12 hours of operation of the receiver. Includes one or two TM-2 or TM-4 headphones.