• Country
• United States of America (USA)

• Manufacturer / Brand
• Spiegel Inc. (Continental); Chicago

• Year
• 1935

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

• Radiomuseum.org ID
• 294453

• Number of Tubes
• 5

• Valves / Tubes

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

• Material
• Metal case

• from Radiomuseum.org
• Model: Air Castle LP4520 - Spiegel Inc. Continental;

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 8.5 x 4.25 x 12 inch / 216 x 108 x 305 mm

• Price in first year of sale
• 27.95 $

• Mentioned in
• Spiegel Catalogs (Aircastle) (Spring/Summer 1935, No. 139, page 149.)

• Author
• Model page created by Noemi Erb. See "Data change" for further contributors.

• Other Models

• Here you find 1277 models, 550 with images and 1040 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Spiegel Inc. (Continental); Chicago