Variometer 501
ID = 137124
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Kellogg Switchboard: Variometer 501 [Misc] ID = 507769 803x700
| Country: United States of America (USA) | Manufacturer/Brand: Kellogg Switchboard & Supply Co. |
| Year: 1923 | Type: Miscellaneous (Other, Various) |
| Principle | RF-Circuit (separate) |
|---|---|
| Wave bands | Wave Bands given in the notes. |
| Power type and voltage | No Power needed |
| Loudspeaker/pwr.out | - For headphones or amp. |
| from Radiomuseum.org | Model: Variometer 501 |
| Material | Bakelite case |
This model was suggested by Otto Frosinn.
All listed radios etc. from Kellogg Switchboard & Supply Co.
Here you find 45 models, 4 with images and 7 with schematics.
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