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ID number: BIRRC-P0905 Institution: Research and Cultural Collections Named collection: Historic Physics Collection Artist / Maker: Mullard Title / Object name: Cavity magnetron – Mullard JP9-75 with magnet Object type: Cavity magnetron Place made: Great Britain Materials: Mainly copper and glass magnetron mounted in permanent magnet Measurements: 14.5 x 9 x 15 cm. Anode block not more than 2.7 cm across and 2.7 cm high |
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A more modern cavity magnetron complete with heavy external permanent magnet. In the image the high voltage and cathode heating current enter down the lead at the top and the microwaves emerge through the window on the front which bolts straight onto a waveguide. Inscriptions / Translations: Mullard JP 9-75 Made in Great Britain. 3587 |
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