Direction Finder Marconi-Bellini-Tosi Type No 11A
Marconi's Wireless Telegraph Co. Ltd.
- Country
- Great Britain (UK)
- Manufacturer / Brand
- Marconi's Wireless Telegraph Co. Ltd.
- Year
- 1922 ??
- Category
- Service- or Lab Equipment
- Radiomuseum.org ID
- 327967
By courtesy of a guest in Switzerland.
By courtesy of a guest in Switzerland.
By courtesy of a guest in Switzerland.
By courtesy of a guest in Switzerland.
- Number of Tubes
- 6
- Main principle
- TRF without regeneration
- Power type and voltage
- Storage and/or dry batteries / 5 & 60 Volt
- Material
- Wooden case, TUBES VISIBLE.
- from Radiomuseum.org
- Model: Direction Finder Marconi-Bellini-Tosi Type No 11A - Marconi's Wireless Telegraph
- Shape
- Tablemodel, Box - most often with Lid (NOT slant panel).
- Dimensions (WHD)
- 500 x 450 x 300 mm / 19.7 x 17.7 x 11.8 inch
- Notes
-
The Direction Finder for professional use Type No. 11A is very similar to Type 11. And there are even more suffixes around.
Since I don't know the differences between them, this is just a copy of Type 11 with pictures of Type No. 11A.From Wikipedia: "BTDF was invented by a pair of Italian officers in the early 1900s, and is sometimes known as a Marconi–Bellini–Tosi after they joined forces with the Marconi Company in 1912. BTDF was the most prevalent form of naval direction finding from the 1920s to well into the 1980s and was used as a major part of early long-distance air navigation systems from the 1930s until after World War II. BTDF systems were also widely used for military signals intelligence gathering."
- Net weight (2.2 lb = 1 kg)
- 16 kg / 35 lb 3.9 oz (35.242 lb)
- Author
- Model page created by Ernst Erb. See "Data change" for further contributors.
- Other Models
-
Here you find 94 models, 92 with images and 17 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Marconi's Wireless Telegraph Co. Ltd.