Antique radios, Old Time Radios
Marxroehre
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Country:
Germany
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| Identical to |
Marxroehre
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| Filament |
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| Description |
Experimental Röhre, Januar 1917. Glimmlichtverstärkerröhre nach Marx mit kalter Kathode, drei Steuerelektroden und Anode. Kaliumkathode und Edelgasfüllung nach Schröter. Referenz: das Buch 27 Jahre Telefunken und Telefunken Katalog Februar 1918.
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Marxroehre: own collection
Peter den Boer
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Collection of
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