The network tube radio &quot;Admiral 4L20A&quot; was produced presumably since 1959 by the &quot;Admiral&quot; corporation, USA. Superheterodyne on four radio tubes. MW range - 530 ... 1625 kHz. IF - 455 kHz. AGC. Maximum output power 1 W. The range of reproducible frequencies is 120 ... 4000 Hz. Power supply from a network of direct or alternating (50/60 Hz) current of 117 volts. Model dimensions 220 x 150 x 150 mm. Weight 2.2 kg.

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Network tube radio receiver `` Admiral 4L20A ''.