Back in the 80s / 90s, I worked for a company that made custom compute boards for military applications. The boards had to withstand the vibration levels, temp

Back in the 80s / 90s, I worked for a company that made custom compute boards for military applications. The boards had to withstand the vibration levels, temperature extremes and other stresses encountered in a main battle tank. They were all wire wrapped. Frequencies were low, though-about 25MHz max.