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Crystal Amplifier

Crystal Amplifier ; Brown S. G. Ltd.; (ID = 182989) Ampl/Mixer
Crystal Amplifier ; Brown S. G. Ltd.; (ID = 2377005) Ampl/Mixer Crystal Amplifier ; Brown S. G. Ltd.; (ID = 2377006) Ampl/Mixer
Crystal Amplifier ; Brown S. G. Ltd.; (ID = 2377007) Ampl/Mixer Crystal Amplifier ; Brown S. G. Ltd.; (ID = 2377008) Ampl/Mixer
Crystal Amplifier ; Brown S. G. Ltd.; (ID = 2377009) Ampl/Mixer Crystal Amplifier ; Brown S. G. Ltd.; (ID = 2377011) Ampl/Mixer
Crystal Amplifier ; Brown S. G. Ltd.; (ID = 2377010) Ampl/Mixer Crystal Amplifier ; Brown S. G. Ltd.; (ID = 2377012) Ampl/Mixer
Crystal Amplifier ; Brown S. G. Ltd.; (ID = 2377013) Ampl/Mixer Crystal Amplifier ; Brown S. G. Ltd.; (ID = 182990) Ampl/Mixer
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Crystal Amplifier ; Brown S. G. Ltd.; (ID = 2377005) Ampl/Mixer
Brown S. G. Ltd.;: Crystal Amplifier [Ampl/Mixer] ID = 2377005 1400x1059
Select picture or schematic to display from thumbnails on the right and click for download.
For model Crystal Amplifier, Brown S. G. Ltd.; London:
eBay item number:372633357207 The set pictured was sold on eBay for $495.00 on 3/28/19.
 
Country:  Great Britain (UK)
Manufacturer / Brand:  Brown S. G. Ltd.; London
Year: 1923–1925 Category: Audio Amplifier or -mixer
Main principle Audio-Amplification; 2 AF stage(s)
Wave bands - without
Details
Power type and voltage Dry Batteries / 4 Volt
Loudspeaker - This model requires external speaker(s).
Power out 0.3 W (unknown quality)
from Radiomuseum.org Model: Crystal Amplifier - Brown S. G. Ltd.; London
Material Wooden case
Shape Tablemodel, Box - most often with Lid (NOT slant panel).
Dimensions (WHD) 13.5 x 5 x 5 inch / 343 x 127 x 127 mm
Notes Mechanical amplifier for driving a loudspeaker from a crystal set, 2 stages plus output transformer, each stage consists of a magnetic reed system plus a differential carbon microphone.
Net weight (2.2 lb = 1 kg) 1.9 kg / 4 lb 3 oz (4.185 lb)
Source of data Radio! Radio!
Mentioned in The Cat's Whisker, Hill, 1978

Model page created by John Hupse † 28.9.20. See "Data change" for further contributors.



All listed radios etc. from Brown S. G. Ltd.; London
Here you find 49 models, 37 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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