Thank you very much! I'm learning tons here. The red wire is connected to the b+1. I'm comfortable measuring on the plate pins. I did it with the cathode biasing on the 5e3. I know there's a ton of voltage there. I'm extremely careful. I've never done fixed bias...had no idea how to get these numbers from the OT. So, when it get's to operating temperature, I can set the meter to read ohms instead of VDC without messing up the meter with high voltage?