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Doublet ID = 97790

Doublet ID = 97790 ; Grigsby-Grunow - (ID = 673469) Radio
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Doublet ID = 97790 ; Grigsby-Grunow - (ID = 673469) Radio
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Country:  United States of America (USA)
Manufacturer / Brand:  Grigsby-Grunow (-Hinds) Co. (Majestic pre 1933); Chicago (IL)
Year: 9999/9999 ? Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 7: 24 24 24 24 45 45 80
Main principle TRF without regeneration; Screengrid 1926-1935
Tuned circuits 5 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Alternating Current supply (AC) / 105; 115; 125 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Radiomuseum.org Model: Doublet ID = 97790 - Grigsby-Grunow -Hinds Co.
Notes Advertised in August 1930. One dial (primary tuning control knob); push-pull af output stage.
Price in first year of sale 143.50 $
Circuit diagram reference Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

Model page created by Hans-Joachim Korn † 16.11.15. See "Data change" for further contributors.



All listed radios etc. from Grigsby-Grunow (-Hinds) Co. (Majestic pre 1933); Chicago (IL)
Here you find 200 models, 118 with images and 156 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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