• Country
• Great Britain (UK)

• Manufacturer / Brand
• Telsen Electric Co. Ltd.; Birmingham & Manchester

• Year
• 1925 ??

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 292543

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Inter-Valve L.F. Transformer Radiogrand - Telsen Electric Co. Ltd.;

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 68 x 82 x 56 mm / 2.7 x 3.2 x 2.2 inch

• Notes

• ratio 3 : 1 (2100 and 700 Ohms)

• Net weight (2.2 lb = 1 kg)
• 0.680 kg / 1 lb 8 oz (1.498 lb)

• Author
• Model page created by Manfred Rathgeb. See "Data change" for further contributors.

• Other Models

• Here you find 23 models, 18 with images and 8 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Telsen Electric Co. Ltd.; Birmingham & Manchester