• Country
• United States of America (USA)

• Manufacturer / Brand
• General Radio Company; Cambridge (MA)

• Year
• 1923

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 226127

• • alternative name: GenRad

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

• Number of Tubes
• 1

• Valves / Tubes
• UV201A or WD12

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

• Wave bands
• - without

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

• Material
• Various materials

• from Radiomuseum.org
• Model: Amplifier Unit Type 300 D - General Radio Company;

• Shape
• Chassis only or for «building in»

• Notes

• General Radio Company Single Stage Audio Amplifier Type 300 D for 1/4 amp UV201A or WD-12 tubes.

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

• Other Models

• Here you find 241 models, 212 with images and 131 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from General Radio Company; Cambridge (MA)