• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Specialties Co.; San Francisco, California

• Year
• 1922

• Category
• Radio module post 1925 (not a part, not a key)

• Radiomuseum.org ID
• 52689

• Number of Tubes
• 3

• Valves / Tubes

• Main principle
• Detector with Vacuum Tube (Valve), no tuner; 2 AF stage(s)

• Wave bands
• - without

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

• Loudspeaker
• - This model requires external speaker(s).

• from Radiomuseum.org
• Model: Det 25T6 Amp - Radio Specialties Co.; San

• Price in first year of sale
• 105.00 $

• Source of data
• Radio Collector`s Guide 1921-1932

• Author
• Model page created by Peter Rutishauser. See "Data change" for further contributors.

• Other Models

• Here you find 5 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Specialties Co.; San Francisco, California