A-2-A Radionic Hearing Aid late

Zenith Radio Corp.; Chicago, IL

  • Anno
  • 1943
  • Categoria
  • Tecnologia medica
  • Radiomuseum.org ID
  • 119936
    • alternative name: Chicago Radio Lab

 Specifiche tecniche

  • Numero di tubi
  • 2
  • Principio generale
  • Amplificatore audio
  • Gamme d'onda
  • - senza
  • Particolarità
  • Apparecchio acustico
  • Tensioni di funzionamento
  • Batterie a secco / 1.5 & 45 Volt
  • Altoparlante
  • - solo per cuffie o auricolari
  • Materiali
  • Vari materiali
  • Radiomuseum.org
  • Modello: A-2-A Radionic Hearing Aid [late] - Zenith Radio Corp.; Chicago,
  • Forma
  • Tascabile (portatile molto piccola), < 20 cm
  • Dimensioni (LxAxP)
  • 2.75 x 5.125 x 0.875 inch / 70 x 130 x 22 mm
  • Annotazioni
  • Developed around the new subminiature tubes in 1942, its production would not commence due to stop of commercial production during WWII. However, government permission was granted in 1943 for the production even in wartime! The reason was that there were about ten million people hard of hearing in the country who were unable to serve in the military.  But they were able to work in war production facilities if they had a hearing aid.

    The A2A was a two-piece hearing aid and needed external batteries, see also model A2A early.

     

  • Peso netto
  • 0 lb 7 oz (0.438 lb) / 0.199 kg
  • Prezzo nel primo anno
  • 40.00 $

 Collezioni | Musei | Letteratura

Collezioni

Il modello A-2-A Radionic Hearing Aid fa parte delle collezioni dei seguenti membri.

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