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RORJ

RORJ ; Grebe, A.H. & Co.; (ID = 232561) Ampl/Mixer
RORJ ; Grebe, A.H. & Co.; (ID = 823114) Ampl/Mixer RORJ ; Grebe, A.H. & Co.; (ID = 823115) Ampl/Mixer
RORJ ; Grebe, A.H. & Co.; (ID = 823116) Ampl/Mixer RORJ ; Grebe, A.H. & Co.; (ID = 823117) Ampl/Mixer
RORJ ; Grebe, A.H. & Co.; (ID = 823119) Ampl/Mixer RORJ ; Grebe, A.H. & Co.; (ID = 823120) Ampl/Mixer
RORJ ; Grebe, A.H. & Co.; (ID = 823121) Ampl/Mixer RORJ ; Grebe, A.H. & Co.; (ID = 823122) Ampl/Mixer
RORJ ; Grebe, A.H. & Co.; (ID = 2368370) Ampl/Mixer
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RORJ ; Grebe, A.H. & Co.; (ID = 823114) Ampl/Mixer
Grebe, A.H. & Co.;: RORJ [Ampl/Mixer] ID = 823114 933x825
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For model RORJ, Grebe, A.H. & Co.; Richmond Hill (NY):
1920 Grebe RORJ Two Stage Amplifier
 
Country:  United States of America (USA)
Manufacturer / Brand:  Grebe, A.H. & Co.; Richmond Hill (NY)
Brand
 
Synchrophase
Year: 1920 Category: Audio Amplifier or -mixer
Valves / Tubes 2: VT-Class-II or A_Moorhead VT-Class-II or A_Moorhead
Main principle Audio-Amplification; 2 AF stage(s)
Wave bands - without
Details
Power type and voltage Storage and/or dry batteries
Loudspeaker - This model requires external speaker(s).
Power out
from Radiomuseum.org Model: RORJ - Grebe, A.H. & Co.; Richmond
Material Wooden case
Shape Tablemodel, Box - most often with Lid (NOT slant panel).
Price in first year of sale 45.00 $
Collectors' prices  
External source of data Ernst Erb
Circuit diagram reference Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
Mentioned in Radio Manufacturers of the 1920's, Vol. 2


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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