Vaccum tube that had to be replaced, Carving planes out of drift wood, building own radios from kits , boy I wish I could have saved some of those good old days. Had more fun just dreaming of what was to come , did not think I would be here to see what would been used know! Every thing is so easy now, kits, arfs, and the radios are out of this world, I wonder what is to come! Still have some stuff left my pride is a mono coupe from the 40's and a 8 channel Heath radio kit I built in the 70's! I think I better stop now ,you people got me started !