• Country
• United States of America (USA)

• Manufacturer / Brand
• Atwater Kent Mfg. Co.; Philadelphia, USA

• Year
• 1922

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 181309

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: 3775 AF-Transformer Type L - Atwater Kent Mfg. Co.;

• Notes
• The Type L was never employed in a factory made radio!
  Transformer ratio 1:3, DC primary resistance = 1700 ohms, DC secondary resistance = 3250 Ohm. Green painted cylindlical metal can with flange and brown (or black) bakelite top with knurled brass terminals, manufactured in the typical colors of the components of the first AK series(1922).
  
  Contenitore di metallo cilindrico con flangia colore verde e coperchio di bachelite marrone con terminali a dadi zigrinati di ottone, fabbricato nei colori tipici dei componenti AK della prima serie(1922). Rapporto di trasformazione 1:3, resistenza primario in DC= 1700 Ohm, resistenza secondario in DC= 3250 Ohm.

• Literature/Schematics (1)
• Advert in Radio News, May 1923

• Author
• Model page created by Antonino Coppola. See "Data change" for further contributors.

• Other Models

• Here you find 507 models, 330 with images and 332 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Atwater Kent Mfg. Co.; Philadelphia, USA