Eighty years ago, these young men, probably scouts, are sitting around the campfire pulling in a distant program, with their General Electric Model LB-530 portable.  The five tube (1A7GT 1N5GT 1N5GT 1H5GT 1Q5GT) set operated off an internal lead-acid battery, which could be charged from either a car or 120 volts, either while playing or when turned off. The two volt internal battery lit the filaments directly, and provided the B+ with a vibrator power supply.

We previously featured another ad for the same set. The set retailed for $39.95. This ad appeared in the May 1941 issue of Boys’ Life.