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C-90

C-90 ; Columbia Phonograph, (ID = 707984) Radio
 
C-90 ; Columbia Phonograph, (ID = 707985) Radio
 
C-90 ; Columbia Phonograph, (ID = 707986) Radio
 
C-90 ; Columbia Phonograph, (ID = 707987) Radio
C-90 ; Columbia Phonograph, (ID = 2389129) Radio C-90 ; Columbia Phonograph, (ID = 2389132) Radio
C-90 ; Columbia Phonograph, (ID = 2389133) Radio  
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C-90 ; Columbia Phonograph, (ID = 2389129) Radio
Columbia Phonograph,: C-90 [Radio] ID = 2389129 800x600
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For model C-90, Columbia Phonograph, American / Volta Graphophone Company; USA
 
Country:  United States of America (USA)
Manufacturer / Brand:  Columbia Phonograph, American / Volta Graphophone Company; USA
alternative name
 
American Graphophone || Columbia Recording
Year: 1932 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 11: 58S 56 58S 58S 4S 57S 57S 58S 47 47 82
Main principle Superhet with RF-stage; ZF/IF 175 kHz
Tuned circuits 6 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Alternating Current supply (AC)
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Radiomuseum.org Model: C-90 - Columbia Phonograph, American
Notes Reactance resonance indicator; push-pull af output stage.
External source of data Ernst Erb
Circuit diagram reference Rider's Perpetual, Volume 3 = 1933 and before


All listed radios etc. from Columbia Phonograph, American / Volta Graphophone Company; USA
Here you find 92 models, 56 with images and 34 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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