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History of the manufacturer  

National Airphone Corp.; New York (NY)

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Name: National Airphone Corp.; New York (NY)    (USA)  
Brand:
Monodyne || Somerset
Abbreviation: national02
Products:
Summary:

National Airphone Corp.,18 Hudson Street, New York;
Trade names: Monodyne, Airphone, Somerset,

History:
.


Some models:
Country Year Name 1st Tube Notes
USA  25 Somerset Shelbourne 4B   One dial (primary tuning control knob) ; mahogany cabinet. 
USA  25 Somerset Standish 4C   One dial; mahogany cabinet. 
USA  25 Somerset Mars 5A UV201A  Three dials (primary tuning control knobs) ; mahogany cabinet. 
USA  25 Somerset Stratford 4A UV201A  Two dials (primary tuning control knobs) ; two-tone mahogany. 
USA  22 G   One dial (primary tuning control knob) . Two cartridge tuning coils, 150-400 and 500-1000... 
USA  23 Monodyne GT1 [old] WD12  One dial (primary tuning control knob). We don't think the material is Bakelite. 
USA  24 Monodyne GT1 [new] WD12  One dial (primary tuning control knob) 
USA  25 Monodyne   One dial (primary tuning control knob) 
USA  25 Somerset Self-Speaker 1926 Model 5   Three dials (primary tuning control knobs) 
USA  26 Standish 4C   One dial (primary tuning control knob) 
USA  24/25 Radiotrola Baby Grand WD12  Improved GT-1 enclosed in cabinet, provided with individual compartments for tubes, batter... 
USA  22/23 Gold Grain Detector   Sealed detector element on a little board with 2 binding posts. Contact with the crystal b... 

[rmxhdet-en]

Further details for this manufacturer by the members (rmfiorg):

By courtesy of K. Birknertbn_usa_nationalairphone_logo.jpg
October 1924 The Radio Dealer magazine advertisement page 7tbn_usa_nationalairphone_ad_oct1922_radiowaves_page7.jpg

  
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