>From: "Roger" <sub1 at rogerhalstead.com> > In the final stages of tuning a Tetrode amp you are peaking the > screen > current with the loading control. Don't you peak the screen current with the TUNING control? Isn't the LOAD control set to produce the desired screen current at a particular level of drive? Dave Hachadorian, K6LL Yuma, AZ .