• Country
• United States of America (USA)

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

• Year
• 1923

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 182943

• • alternative name: Mitchell, R.; Boston

• Number of Tubes
• 2

• Valves / Tubes
• UV201A UV201A

• Main principle
• Audio-Amplification; 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: Two Step Amplifier - Se-Ar-De brand; Boston

• Dimensions (WHD)
• 7.375 x 7.25 x 7.5 inch / 187 x 184 x 191 mm

• Notes
• The SE-AR-DE Two Step Amplifier id designed to add two stages of audio amplification to the receiver.

• Price in first year of sale
• 30.00 $

• Source of data
• - - Manufacturers Literature

• Author
• Model page created by Alan Larsen. 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