• Country
• United States of America (USA)

• Manufacturer / Brand
• Richardson Radio Inc.; New York City, N.Y.

• Year
• 1925

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 55228

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

• Number of Tubes
• 5

• Valves / Tubes

• Main principle
• TRF without regeneration

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Sophomore - Richardson Radio Inc.; New

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

• Notes

• Three dials (primary tuning control knobs)

• Price in first year of sale
• 38.00 $

• External source of data
• Ernst Erb

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

• Other Models

• Here you find 9 models, 7 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Richardson Radio Inc.; New York City, N.Y.