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225M

225M; Grebe, A.H. & Co.; (ID = 248324) Radio
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225M; Grebe, A.H. & Co.; (ID = 248324) Radio
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Country:  United States of America (USA)
Manufacturer / Brand:  Grebe, A.H. & Co.; Richmond Hill (NY)
Brand
 
Synchrophase
Year: 1930 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 7: 224 224 224 227 245 245 280
Main principle TRF (Tuned-Radio-Frequency but use of regeneration unknown); 1 AF stage(s); Anode bend detection
Tuned circuits 4 AM circuit(s)
Details
Power type and voltage Alternating Current supply (AC) / 110;120 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Radiomuseum.org Model: 225M - Grebe, A.H. & Co.; Richmond
Material Wooden case
Shape Console with any shape - in general
Notes One dial (primary tuning control knob) Push-Pull amplifier directly following detector. Identical circuit scheme for AH1, 160, 18950, 225W, 225M
Price in first year of sale 225.00 $
Collectors' prices  
External source of data Ernst Erb
Source of data Radio Collector`s Guide 1921-1932
Mentioned in The Radio Collector's Directory and Price Guide 1921 - 1965


All listed radios etc. from Grebe, A.H. & Co.; Richmond Hill (NY)
Here you find 186 models, 115 with images and 59 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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