File:Marconi Carnarvon 300kW transatlantic spark transmitter 1919 - tuning coil.png
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![File:Marconi Carnarvon 300kW transatlantic spark transmitter 1919 - tuning coil.png](https://upload.wikimedia.org/wikipedia/commons/thumb/2/22/Marconi_Carnarvon_300kW_transatlantic_spark_transmitter_1919_-_tuning_coil.png/792px-Marconi_Carnarvon_300kW_transatlantic_spark_transmitter_1919_-_tuning_coil.png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 09:36, 12 April 2018 | ![]() | 1,153 × 873 (667 KB) | commons>Chetvorno | User created page with UploadWizard |
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