Note
In spite of its similar nomenclature, the S-120A is entirely different than the S-120. The biggest difference may be that the 120 is fully solid state It was made for Hallicrafters in Japan.
Features include a headphone jack, BFO, AGC, built-in speaker, 0-100 bandspread, and a built-in ferrite rod antenna for BCB reception.
Power: 120 VAC or 12 VDC
Coverage: 540 kHz to 31 MHz
IF: 455 kHz
Modes: AM, CW
Power: 120 VAC or 12 VDC, 30 watts
Solid state: 9 transistors, 6 diodes
References
Review. Popular Electronics, Mar 1970, p. 78.