- Country
- Great Britain (UK)
- Manufacturer / Brand
- Radio Instruments Ltd (RI)., London
- Year
- 1929
- Category
- Radio part (not a module)
- Radiomuseum.org ID
- 189729
- Material
- Bakelite case
- from Radiomuseum.org
- Model: Hypermu - Radio Instruments Ltd RI.,
- Dimensions (WHD)
- 3 x 1.5 x 3 inch / 76 x 38 x 76 mm
- Notes
- INTERVALVE TRANSFORMER
Uses nickel alloy laminations in a screened and bakelite insulated case. -3dB points at approximately 25 and 8000 Hz.
Tested at the National Physical Laboratory (NPL) with test certificated issued in November 1929.
- Net weight (2.2 lb = 1 kg)
- 0 lb 14 oz (0.875 lb) / 0.397 kg
- Source of data
- Wireless World (The), London (WW, 79)
- Author
- Model page created by Roy Johnson. See "Data change" for further contributors.
- Other Models
-
Here you find 48 models, 42 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 (RI)., London