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National Airphone Radios -1922B

National Airphone Radios -1922B.jpg Murdock Headphones -1922AThumbnailsPopular Mechanics 1916-01Murdock Headphones -1922AThumbnailsPopular Mechanics 1916-01Murdock Headphones -1922AThumbnailsPopular Mechanics 1916-01Murdock Headphones -1922AThumbnailsPopular Mechanics 1916-01

Right page of the two-page spread. If you couldn't see enough in the other ad, here's a bigger picture. Also, see how the tuning coils are in cartridge form and can be switched in and out. With testimonials. Published in the October, 1922 issue of RADIO NEWS.



Source: Magazine collector Steve Davis

Restoration by: magscanner