• Country
• United States of America (USA)

• Manufacturer / Brand
• Federal Radio Corp. / Federal Telephone & Telegraph Co.; Buffalo, NY

• Year
• 1922

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 40305

• • alternative name: Federal Recorder || Federal Tel. & Radio || Federal T&T
  • Brand: Orthosonic / Ortho-Sonic

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

• Number of Tubes
• 2

• Valves / Tubes
• UV201 UV201

• Main principle
• Audio-Amplification; 2 AF stage(s); Anode bend detection

• Wave bands
• - without

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

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

• Material
• Metal case

• from Radiomuseum.org
• Model: Two-Stage A. F. Amplifier No. 9 - Federal Radio Corp. / Federal

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Notes
• The Federal Telegraph & Telephone No. 9 Two-Stage Audio Amplifier.

• Price in first year of sale
• 58.00 $

• External source of data
• Ernst Erb

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

• Mentioned in
• Federal Bulletin 119-W October 1922

• Literature/Schematics (2)
• Radio Digest Illustrated, 1922 Oct. 07, p. 4

• Other Models

• Here you find 202 models, 90 with images and 129 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Federal Radio Corp. / Federal Telephone & Telegraph Co.; Buffalo, NY