• Country
• Great Britain (UK)

• Manufacturer / Brand
• Radio Instruments Ltd. & Aeronautical & General Instruments, Ltd.; London

• Year
• 1931 ?

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 203645

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

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Parafeed L.F. Transformer DY28 - Radio Instruments Ltd. &

• Dimensions (WHD)
• 55 x 43 x 36 mm / 2.2 x 1.7 x 1.4 inch

• Notes
• A.F. transformer primarily for home construction.

• Author
• Model page created by Stuart Irwin. See "Data change" for further contributors.

• Other Models

• Here you find 49 models, 43 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Instruments Ltd. & Aeronautical & General Instruments, Ltd.; London