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Loud Speaking Telephone D Form C

Loud Speaking Telephone D; BTH B.T.H., British (ID = 461044) Speaker-P Loud Speaking Telephone D; BTH B.T.H., British (ID = 461045) Speaker-P
Loud Speaking Telephone D; BTH B.T.H., British (ID = 907232) Speaker-P Loud Speaking Telephone D; BTH B.T.H., British (ID = 907233) Speaker-P
Loud Speaking Telephone D; BTH B.T.H., British (ID = 907234) Speaker-P Loud Speaking Telephone D; BTH B.T.H., British (ID = 1545263) Speaker-P
Loud Speaking Telephone D; BTH B.T.H., British (ID = 1778971) Speaker-P Loud Speaking Telephone D; BTH B.T.H., British (ID = 1778972) Speaker-P
Loud Speaking Telephone D; BTH B.T.H., British (ID = 1778973) Speaker-P
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Loud Speaking Telephone D; BTH B.T.H., British (ID = 461044) Speaker-P
BTH B.T.H., British: Loud Speaking Telephone D [Speaker-P] ID = 461044 366x700
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For model Loud Speaking Telephone D Form C, BTH (B.T.H.), British Thomson-Houston Co, Ltd.
 
Country:  Great Britain (UK)
Manufacturer / Brand:  BTH (B.T.H.), British Thomson-Houston Co, Ltd.
Year: 1924 Category: Loudspeaker, headphone or earphone
Wave bands - without
Details
Power type and voltage Storage and/or dry batteries
Loudspeaker Horn / Ø 9.25 inch = 23.5 cm
Power out
from Radiomuseum.org Model: Loud Speaking Telephone D [Form C] - BTH B.T.H., British Thomson-
Material Various materials
Shape Miscellaneous shapes - described under notes.
Dimensions (WHD) 18 x 9.25 x 0 inch / 457 x 235 x 0 mm
Notes

Electro-dynamic driver!

Cast metal base, brown-enamelled metal horn.

Price in first year of sale 12.10 £
Mentioned in Radio! Radio! (fig.834)
Literature/Schematics (1) Advert in Modern Wireless, Sept.1924, p.438

Model page created by Jean-Luc Comblin. See "Data change" for further contributors.



All listed radios etc. from BTH (B.T.H.), British Thomson-Houston Co, Ltd.
Here you find 32 models, 27 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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