On 3/01/2016 12:48 pm, "drlegendre ." <drlegendre at gmail.com> wrote: > > Which type of transistor did you use for the mod? I don't see that in the > writeup.. though I could well be missing it. > > Linked article says only "simple NPN" Good point. I'll have to mention it. It was just a common old 2n3904. Terry (Tez)