• Country
• United States of America (USA)

• Manufacturer / Brand
• Precise Manufacturing Corporation.; Rochester, NY

• Year
• 1925

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 218473

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Audio Transformer No. 480 - Precise Manufacturing

• Notes
• Precise Audio Transformer No. 480. Price $7.50
  Ratio 2.5 to 1 or 5 to 1.

• Price in first year of sale
• 8.00 $

• Mentioned in
• Radio Broadcast, Nov. 1925, p. 88

• Author
• Model page created by Hans-Joachim Korn † 16.11.15. See "Data change" for further contributors.

• Other Models

• Here you find 4 models, 3 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Precise Manufacturing Corporation.; Rochester, NY