• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Specialty Shop; Oakland, California

• Year
• 1923 ?

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

• Radiomuseum.org ID
• 257633

• Number of Tubes
• 2

• Valves / Tubes

• Main principle
• Radio Frequency Amplification only

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Radio Frequency Amplifier Type 222 - Radio Specialty Shop; Oakland,

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

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

• Other Models

• Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Specialty Shop; Oakland, California