Okay, I now have several boat anchors (mostly all-tube radios) that I must attempt to resuscitate. I have a variac but am not really sure of the most appropriate method to use. By that I mean X volts for Y duration, then Q volts for Z duration, etc. I will begin with equipment that is ultra-clean and looks like it could have been used recently. I do not know the history of most of this equipment. One set is the Kenwood T599D/R599D twins I have owned for many years. Those are the only ones I know worked the last time used. So...what do the experts say?