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call into the war to the net and I watched the YouTube videos on back into where they came from, the history of them, where they were used and then they were also discussing a solid state electron channel device similar to a YouTube or a back into in that the only difference was the electrons passed through a cavity instead of solid material makes them very very much more tolerant to radiation so I'm gonna be looking at that and when it comes to soldering let me break. I think I'm a pretty good solder guy you know I was an electronic technician for ten years before I got my my double E and I said I don't know how to call it the first third of my career falling in you know iron.