For its time, it offered precise tuning, digital frequency readout, and multiple operating modes including SSB — features that appealed to shortwave hobbyists and even professional users. About the Sony ICF-2001 Receiver The Sony ICF-2001 is a portable shortwave/world receiver originally released around 1980 (sometimes described as the first portable PLL-synthesized shortwave radio) with a range of advanced then-cutting-edge features: Key Features Wide frequency coverage: 150 kHz–29,999 kHz for LW/MW/SW and FM 76–108 MHz. Direct keypad frequency entry and LCD digital readout — uncommon in radios of that era. PLL frequency synthesis with dual conversion for improved stability and selectivity. 6 memory presets for favorite stations. SSB (Single Side Band) reception capability useful for amateur radio and international broadcasters. External antenna jack, earphone/record output, RF gain, and LED signal meter. Powered by 3 D-cell batteries for the receiver plus 2 AA batteries for clock/display, or via AC adapter. Physical & Performance Notes Dimensions: ~310 × 171 × 56 mm; weight ~1.8 kg (with batteries).