• Country
• United States of America (USA)

• Manufacturer / Brand
• Se-Ar-De (brand); Boston

• Year
• 1923

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 215648

• • alternative name: Mitchell, R.; Boston

• Number of Tubes
• 1

• Valves / Tubes

• Main principle
• Detector with Vacuum Tube (Valve), no tuner

• Wave bands
• - without

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - For headphones or amp.

• Material
• Various materials

• from Radiomuseum.org
• Model: Detector Unit 206 [knock down] - Se-Ar-De brand; Boston

• Shape
• Chassis only or for «building in»

• Notes
• 30 Ohm rheostat for low drain filament tubes.

• Price in first year of sale
• 3.00 $

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 16 models, 16 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Se-Ar-De (brand); Boston