Wireless Specialty Apparatus Co_ -1920A.jpg Wallace Valve Detectors -1913AThumbnailsWood Cabinet Corporation -1929AWallace Valve Detectors -1913AThumbnailsWood Cabinet Corporation -1929AWallace Valve Detectors -1913AThumbnailsWood Cabinet Corporation -1929AWallace Valve Detectors -1913AThumbnailsWood Cabinet Corporation -1929AWallace Valve Detectors -1913AThumbnailsWood Cabinet Corporation -1929A

A bit of a switcheroo here, as this equipment is for the professional constructor, in the early days of radio communication. Interesting to compare it, eh. Published in the June, 1920 issue of the PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS.



Source: Magazine collector Steve Davis

Restoration by: magscanner