• Country
• United States of America (USA)

• Manufacturer / Brand
• Mignon Products Corp., Buffalo, New York

• Year
• 1925 ??

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 212163

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Audio Frequency Transformer SP - Mignon Products Corp., Buffalo

• Dimensions (WHD)
• 69 x 73 x 51 mm / 2.7 x 2.9 x 2 inch

• Notes
• A.F. Interstage Transformer for TRF receiver; ratio about 1:7; primary impedance about 1000 Ohms.

• Net weight (2.2 lb = 1 kg)
• 0.9 kg / 1 lb 15.7 oz (1.982 lb)

• Author
• Model page created by Emilio Focosi. See "Data change" for further contributors.

• Other Models

• Here you find 4 models, 4 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Mignon Products Corp., Buffalo, New York