"Roadmap" Spark Key Type C
Marconi Wireless Telegraph Co. of America
- Country
- United States of America (USA)
- Manufacturer / Brand
- Marconi Wireless Telegraph Co. of America
- Year
- 1912
- Category
- Morse-Equipment & TTY, RTTY, TDD etc.
- Radiomuseum.org ID
- 199186
-
- alternative name: American Marconi || Marconi, American
- Brand: Marconiphone
- Wave bands
- - without
- Power type and voltage
- No Power needed
- Loudspeaker
- - - No sound reproduction output.
- Material
- Various materials
- from Radiomuseum.org
- Model: "Roadmap" Spark Key Type C - Marconi Wireless Telegraph Co.
- Shape
- Tablemodel, with any shape - general.
- Dimensions (WHD)
- 5.75 x 2 x 2.7 inch / 146 x 51 x 69 mm
- Notes
- One of the first products of the American Marconi Company was this "Roadmap" Spark Key. c. 1912. Has a 'mud' (electrose) base. This spark key was nicknamed the "roadmap" because of the conductors traced out on its base like a map. There are at least 2 different variations of the Roadmap Key. This variation was the Type C key supplied with the Type P-4 2 KW Panel set, the P-5 1/2 KW set, and the P-9 1/4 KW set.
- Author
- Model page created by Alan Larsen. See "Data change" for further contributors.
- Other Models
-
Here you find 31 models, 31 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Marconi Wireless Telegraph Co. of America
Collections
The model "Roadmap" Spark Key is part of the collections of the following members.