bottom side of the inside, facing the removable cover and solder lugs. a laced wiring harness can be seen, and a fuse.

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1. F4GRX Sébastien (f4grx@chaos.social)'s status on Friday, 10-Jan-2025 07:17:07 JST F4GRX Sébastien

   in reply to

   @altomare the insides are quite complex, two transistors heat the box that I understand as an outside oven. Inside there are circuits, includind two transformer-like units, and a big cylindrical plastic box that should be the inner oven. Interestingly the ground seems connected to the +24v line. Full reverse engineering and restoration will happen!

   If it was used for a long time, this crystal should have aged like good champaign and will be quite stable.

   edit: alt incoming - done