• Country
• United States of America (USA)

• Manufacturer / Brand
• Universal Radio & Research Co.; Pasedena, CA

• Year
• 1922

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 196639

• Main principle
• Radio Frequency Amplification only

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

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Three-Stage Radio Frequency Amplifier R-310 - Universal Radio & Research Co.

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

• Notes
• The Universal Radio & Research Co. Type R-310 Three Stage Radio Frequency Amplifier used DX-1 RF transformers and RAC3 Meyers tubes. Adaptable for loop reception with a detector and tuning condenser.

• Price in first year of sale
• 125.00 $

• Literature/Schematics (1)
• December 1922 Radio News advertisement. page 1200

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

• Other Models

• Here you find 2 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Universal Radio & Research Co.; Pasedena, CA