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ID number:  BIRRC-P0900
Institution:  Research and Cultural Collections
Named collection:  Historic Physics Collection
Title / Object name:  Cavity magnetrons - Commercial air-cooled type CV120
Object type:  Cavity magnetron
Date made:  Early 1940s
Materials:  Mainly copper and glass
Measurements:  Block diam. 7.5 cm, height 6.5 cm, fin diameter 11.5 cm, overall length 26 cm

These 12-cavity magnetrons were designed to generate microwaves of wavelength 10.7 cm. The anode-cathode potential was 25 kV and the current 40 A, generating a pulsed output power of 400 kW. The magnetron would be used in a magnetic field of about 0.12 T
Magnetron A is complete and has wooden packing measuring 28 x 10 x 8 cm. (Image b.)
Magnetron B is cut open to display interior. (image c)

Inscriptions / Translations:  CV120 No. 19971

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