OTB Type A
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Harding, Holland &: OTB Type A [Crystal] ID = 1578322 846x1400
Select picture or schematic to display from thumbnails on the right and click for download.
For model OTB Type A, Harding, Holland & Fry, London:
by courtesy of Ian L.Sanders from Tickling the Crystal vol.1
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Brand
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OTB (O.T.B.)
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Year:
1923
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Category: Detector-Radio (Crystal or diode, without tubes/transistors) |
Main principle |
Crystal or Solid State Detector
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Tuned circuits |
1 AM circuit(s) |
Wave bands |
Broadcast only (MW). |
Details |
|
Power type and voltage |
No Power needed |
Loudspeaker |
- For headphones or amp. |
Power out |
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from Radiomuseum.org |
Model: OTB Type A - Harding, Holland & Fry, London |
Material |
Wooden case |
Shape |
Miscellaneous shapes - described under notes. |
Dimensions (WHD) |
0 x 2.25 x 0 inch / 0 x 57 x 0 mm |
Notes |
turned mahogany lidded box,5"dia.; BBC/PMG stamp, GPO No.745; |
Source of data |
Radio! Radio! |
Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.
All listed radios etc. from Harding, Holland & Fry, London
Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.