4 public-domain matches

Shortwave Radio

Cover of Deutsches gesundheitswesen

Deutsches gesundheitswesen

Moritz Pistor

Cover of Chinese Military 139B Shortwave Radio Receiver Technical Manual

Chinese Military 139B Shortwave Radio Receiver Technical Manual

unable to identify

Cover of Breting 14-AX Shortwave Radio Operating Instructions and Schematic (1936-1937)

Breting 14-AX Shortwave Radio Operating Instructions and Schematic (1936-1937)

Breting Radio Manufacturing Company

Cover of Chinese Military 239-1 Shortwave Radio Receiver User Manual

Chinese Military 239-1 Shortwave Radio Receiver User Manual

Virgil Cheng