• Country
• United States of America (USA)

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

• Year
• 1933 ?

• Category
• Car Radio, perhaps also + sound player/recorder

• Radiomuseum.org ID
• 33273

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 4

• Valves / Tubes
• 77 44 75 41

• Main principle
• Superheterodyne (common); ZF/IF 264 kHz

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / =6 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Metal case

• from Radiomuseum.org
• Model: 424 - Atwater Kent Mfg. Co.;

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 6.5 x 5 x 12.5 inch / 165 x 127 x 318 mm

• Notes

• sync.vibrator for +B; According tu the tube line up, the model is 1933 or younger.

• Price in first year of sale
• 37.90 USD

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 7 = 1936 and before

• Literature/Schematics (1)
• Radio Retailing (Radio & Television R.) (October 1933 issue, page 19)

• 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