As a resident of Binghamton, where the Link Trainer originated, I loved to see your take on it and how it actually worked. I remember seeing the little blue box in our airport, but I had no clue that that box and others like it helped to win World War 2 for the United States and our Allies.,(reply>), I was hoping this was at Roberson when I clicked on the thumbnail! Alas,(reply>), There's a Link organ in the Roberson Museum as well.