Portable radio &quot;Transetta 581&quot; has been produced since 1958 by WSW (Siemens), Austria). Superheterodyne on 7 transistors. MW range - 200 ... 550 meters plus 1 frequency in LW. Countdown in meters. IF 460 kHz. Sensitivity 1 mV / m. Selectivity 24 dB. Power supply three tubular elements of 3 V. Loudspeaker with a diameter of 8 cm. Sound frequency range 250 ... 4000 Hz. Dimensions of RP 175x102x54 mm. Weight 1 kg.

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Portable radio '' Transetta 581 ''.