International Atomic Space Clock (Patreon)

I connected the HP 5061A Cesium frequency standard to the Soyuz space clock! It was a little more complicated than I expected. But I think I just made the most accurate vintage international atomic space alarm clock ever. Note that the face of the Soyuz clock does not show the comma at the right anymore, which is a sign that it is clocked by the external source. And Tintin was there to witness the accomplishment.