11-05-2021, 02:32 PM
No, Mike, I have not. this shows up dramatically with the spectrum analyzer. Interestingly, I changed the inductance of the second intermediate coil (the one that feeds the plate detector) by inserting brass in the coil tube. I was able to increase the 550khz signal by about 6 or 7db without affecting the sensitivity at the high end of the dial. I'll glue the brass in rather than unwind some of the secondary to reduce inductance. At least I gained a little!
