| Western Electric JAN-725A magnetron. This has the US 'anchor'
marking and also C122943 stamped onto the body. |
The 725A is fixed at 9375MHz +/-30MHz. 6.3V/1A heater, 16kV/16A, 60kW pulse
output. Used in various radar sets. In AN/APS-4 it was fed by two 1B22
spark-gap switches in series. |
See also 730A.
The output is via a waveguide measuring 28x12mm.
 Here
the output probe can be seen encased in glass. |
Edge view |
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Side view |
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Thanks to Danial Stocks for supplying this valve
This file was last modified
23:12:01, Saturday June 07, 2008
