radiomuseum.org

Majestic Ch= 25-B

Majestic Ch= 25-B; Grigsby-Grunow - (ID = 23959) Radio
 
Majestic Ch= 25-B; Grigsby-Grunow - (ID = 673986) Radio
 
Majestic Ch= 25-B; Grigsby-Grunow - (ID = 673989) Radio
 
Majestic Ch= 25-B; Grigsby-Grunow - (ID = 673990) Radio
 
Majestic Ch= 25-B; Grigsby-Grunow - (ID = 673991) Radio
Use red slider bar for more.
Majestic Ch= 25-B; Grigsby-Grunow - (ID = 23959) Radio
Select picture or schematic to display from thumbnails on the right and click for download.
 
Country:  United States of America (USA)
Manufacturer / Brand:  Grigsby-Grunow (-Hinds) Co. (Majestic pre 1933); Chicago (IL)
Year: 1931 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 9: 51 51 27 51 27 27 47 47 80
Main principle Superhet with RF-stage; ZF/IF 175 kHz; Screengrid 1926-1935
Tuned circuits 7 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Alternating Current supply (AC) / 115; 230 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Radiomuseum.org Model: Majestic Ch= 25-B - Grigsby-Grunow -Hinds Co.
Material Metal case
Shape Chassis only or for «building in»
Notes Uses one or more spray shield tubes; push-pull af output stage; chassis 25B is employed in Cheltenwood, Brentwood and Brucewood models.
External source of data E. Erb 3-907007-36-0
Circuit diagram reference Die «Thali Schemasammlung» führt das Modell.
Literature/Schematics (1) Rider's Perpetual, Volume 2 = 1932 and before


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.



  
rmXorg