• Country
• United States of America (USA)

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

• Year
• 1950 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 122831

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

• Number of Tubes
• 4

• Valves / Tubes
• 1R5 1L4 1U5 3S4

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / 117; 6 & 67,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3.5 inch = 8.9 cm

• from Radiomuseum.org
• Model: Aircastle DM700 - Spiegel Inc. Continental;

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes
• Selenium Rectifier.

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 85 Folder1)

• Author
• Model page created by Walter Wiesmüller † May 2012. 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