• Country
• United States of America (USA)

• Manufacturer / Brand
• International Radio Telegraph Co.; New York City

• Year
• 1920

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 195938

• Number of Tubes
• 2

• Valves / Tubes
• VT-Class-II or A_Moorhead VT-Class-II or A_Moorhead

• 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).

• Material
• Wooden case

• from Radiomuseum.org
• Model: Two Stage Audio Amplifier Type RTA_100-A - International Radio Telegraph

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

• Dimensions (WHD)
• 6 x 6.375 x 0 inch / 152 x 162 x 0 mm

• Notes
• The International Radio Telegraph Co. Two-Stage Audio Amplifier was advertised in the January 1920 Radio News magazine.

• Price in first year of sale
• 42.50 $

• Mentioned in
• June 1920, Electrical Merchandising magazine advertisement page 173

• Literature/Schematics (1)
• January 1920 Radio News advertisement page 385

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• Other Models

• Here you find 8 models, 7 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from International Radio Telegraph Co.; New York City