On Feb 5, 2013, at 18:24 , Bjorn Forsberg <sm5ur at mindspring.com> wrote: > If you think early 1960's is too late for our common interests, I might dig up something else, but at least I'm offering a presentation to sleep to (after lunch). That is certainly not too late! -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/