|Year: 1924–1950 ?||Category: Radio part (not a module)|
|Wave bands||- without|
|Power type and voltage||No Power needed|
|from Radiomuseum.org||Model: Velvet Vernier Dial B Dial - National Company; Cambridge &|
|Dimensions (WHD)||4 x 5 x 1.375 inch / 102 x 127 x 35 mm|
The National Type B Dial was one of the first radio products made by the National Company. It was originally produced for Browning-Drake, but quickly became a mainstay for National, starting with the Regenaformer and culminating with the SW-3 Universal. Along with the National Type A Dial, it was generally known as the "Velvet Vernier" dial.
Also, see similar dial by Zeus, Austria.
|Net weight (2.2 lb = 1 kg)||0 lb 4 oz (0.25 lb) / 0.114 kg|
|Price in first year of sale||2.50 USD|
|Mentioned in||The Radio Trade Directory USA 1925 (p.56)|
|Literature/Schematics (2)||Radio Broadcast, Dec. 1925, p. 239|
Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.
All listed radios etc. from National Company; Cambridge & Malden (MA)
Here you find 425 models, 268 with images and 151 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.