On Sat,12/5/2015 11:58 AM, Rob Atkinson wrote: > The same thing has crossed my mind Jack. Or given the stampede to SDR > rigs, class D boxes, the latest XQP3000 rig blah blah, there won't be > anyone left who can converse and understand all vacuum tube gear. Aside from keeping boat-anchors running, exactly why does that matter? 73, Jim K9YC