Freed Eisemann NR-9 (1927)






This is a six tube 'neutrodyne' receiver. Uses '201A tubes. Neutrodyne is a description of neutralization of the individual stages for stability and freedom from undesired oscillations which were somewhat common in 1920s sets. This radio is quite stable. It uses a ganged tuning system for "one-knob" tuning. There's a nice 4-range antenna tuning system on the input. Performance is excellent, almost comparable to a modern era broadcast radio.






Return to Recipes From Venus and Mars - Exray's Homepage

Return to Sparkbench Home Page