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History of the manufacturer  

Mastertone Radio Co.; Newark, NJ

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Name: Mastertone Radio Co.; Newark, NJ    (USA)  
Abbreviation: mastertone
Products: Brand

Mastertone Radio Co. (or Radiotube co)
903 Broad Street, Newark, New Jersey

This company listed on page 359 of Tyne's "Saga of the Vacuum Tube" and in the August 1925 Radio Trade Directory as Radiotube Co, both with the same address. 199 and 201A tubes were made and had "daylight" blue glass.


This manufacturer was suggested by Fin Stewart.


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

Radio news march 1925tbn_mastertone_rn_march_1925.jpg
Radio World advert May 1925tbn_mastertone_rw53025.png
Mastertone advert c. 1925 - unidentifiedtbn_mastertone_advert_c._1925_unidentified.png