Long Wave CR7 Type 1 exposed tube and rheostat
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Grebe, A.H. & Co.;: Long Wave CR7 Type 1 [Radio] ID = 1066382 933x704
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: Broadcast Receiver - or past WW2 Tuner | ||||
| Valves / Tubes | 1: VT-Class-I or B_Moorhead-Shaw |
| Main principle | TRF with regeneration |
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| Wave bands | Long Wave and/or Very Low Frequency (VLF). |
| Details | |
| Power type and voltage | Storage and/or dry batteries |
| Loudspeaker | - For headphones or amp. |
| Power out | |
| from Radiomuseum.org | Model: Long Wave CR7 Type 1 [exposed tube and rheostat] - Grebe, A.H. & Co.; Richmond |
| Material | Wooden case |
| Shape | Tablemodel, Box - most often with Lid (NOT slant panel). |
| Notes | The Grebe CR-7 Long Wave Regenerative Receiver covered the 500-20,000 meters wavelength range. This early version also lacks the Antennae Condenser switch found on the later versions. |
| Price in first year of sale | 210.00 $ |
| Mentioned in | 1921 Mesco catalog page 116-117 |
| Literature/Schematics (2) | The Wireless Experimenters Manual, 1920, E.E. Bucher, Page 251 |
Model page created by Alan Larsen. See "Data change" for further contributors.
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.
