"Barry" <n4buq at aol.com> wrote: > I wonder what the output voltage on your PTO runs with the 3TF7 in place? > Both of mine only put out a couple of volts, but I think they're supposed to > generate about 7 volts. I have about 5V P-P with the 3TF7 in place. I'll try putting in 12BA6's and taking out the 3TF7 and see if I notice anything different. Tim.