> Well, as it is, with 250 VDC HV, the screen voltage on all tubes is 125 VDC. > At 100 VDC, the screen voltage would be 50 VDC. A little lower in both cases I think, since although the divider is 7K/7K there is a small screen current drawn through the "top" 7K. Otherwise, I totally agree. 73 de Neil ZL1ANM