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Radar/Aircraft main page |
Receiver Type R1392J.This is a later version that used a small metal cased HC6-U crystal that was fitted into a thermostatically controlled oven in order to keep its temperature constant which prevented any tendency for the frequency to drift. Ref: 5820-99-953-7424 |
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Receiver Type R1392J (Photograph Number 0188) Click on the image to get the full size image. |