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Loud Speaking Telephone D Form C

ID = 104406

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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

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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.

Collection of Christian Engel (D)

Collection of Nico Pokrant (D)