1939 Four Tube TRF

1939NovPSThe young woman shown here is on a weekend jaunt, but that doesn’t stop her from tuning in her favorite radio programs, thanks to the four-tube set described in the November 1939 issue of Popular Science. The set was specially designed for overnight travels, since it nested inside an overnight luggage carrier. The entire piece of luggage could be built according to the plans in the magazine, or it could be made up at the local luggage shop. Both the radio and the baggage were attractively covered in airplane-luggage fabric. When she arrived at her destination, she simply took the radio out of the top of her case, plugged it in, and she was again connected with the world.

The receiver itself was a four-tube TRF design.  A curtain burner cord provided the filament voltage.

1939NovPSschematic2

1939NovPSschematic