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

@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