Note
QST, Jul 1941, pp. 1–2.
Visually almost identical to the SX-28. Designed with fewer features, for example, there is no bass boost as found in the SX-28. Use the PM-23 as an external speaker.
Coverage: 500 kHz to 42 MHz
IF: 455 kHz
No built-in speaker
BFO
ANL
Bandspread
Variable selectivity
Power: 120 VAC
Tubes: (1) 5Z3, (2) 6V6, (1) 6CS7, (1) 6J5, (1) 6H6, (1) 6B8, (2) 6SK7, (1) 6K7, (1) 6SA7, (1) 6AB7
Brief review: Radio, Oct 1941, p. 66.