10-29-2016, 02:18 PM
I found a couple sources for the schematic on this unit but as usual they were asking 2 to 3 times as much for an electronic copy when I have paid much less for more information on the set of bulletins I got from one of the Philco guys. I believe its the ECC86 tube in this unit that generates the high voltage for the other tubes to operate but I could be wrong.