• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Products Manufacturing Co. (RPM); Chicago, IL

• Year
• 1923/1924

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 203662

• Number of Tubes
• 1

• Valves / Tubes
• UV201A

• Main principle
• Audio-Amplification; 1 AF stage(s)

• Wave bands
• - without

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

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

• Material
• Bakelite, TUBES VISIBLE

• from Radiomuseum.org
• Model: RPM Single Stage Amplifier No. 301 - Radio Products Manufacturing

• Shape
• Chassis only or for «building in»

• Notes
• Radio Products Manufacturing Co. RPM 1-Stage Audio Amplifier module.

• Price in first year of sale
• 10.00 $

• Mentioned in
• Radio Merchandising, Oct. 1923, p.45

• Literature/Schematics (4)
• 1924 Central Electric Co. catalog page 38

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

• Other Models

• Here you find 23 models, 10 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Products Manufacturing Co. (RPM); Chicago, IL