RORJ
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Grebe, A.H. & Co.;: RORJ [Ampl/Mixer] ID = 823114 933x825
Select picture or schematic to display from thumbnails on the right and click for download.
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Synchrophase | ||||
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| 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) |
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| 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.
