Ralph, thanks for the explanation on the modification. Can you elaborate a little more based on the following:
First, is what you describe the same technique that is referred to as cathodyne? From what I have gathered from this technique the signal is applied to the grid, one side taken from plate and the other phase on its cathode. I have also heard that there could be issues where the impedances are not the same. For example, plate source Z is say 20K and cathode source is 1K. In this situation the problem is at high frequencies, capacity overtakes the plate side and it rolls off highs, while the cathode side still works. The signal is then an algebraic sum of the original signal.
I'm not an engineer so I'm trying to digest this because it appears to be a very simple and inexpensive mod, but then I have to wonder why more people don't do it this way versus using an input transformer. Any additional comments and insights you have would be appreciated.
First, is what you describe the same technique that is referred to as cathodyne? From what I have gathered from this technique the signal is applied to the grid, one side taken from plate and the other phase on its cathode. I have also heard that there could be issues where the impedances are not the same. For example, plate source Z is say 20K and cathode source is 1K. In this situation the problem is at high frequencies, capacity overtakes the plate side and it rolls off highs, while the cathode side still works. The signal is then an algebraic sum of the original signal.
I'm not an engineer so I'm trying to digest this because it appears to be a very simple and inexpensive mod, but then I have to wonder why more people don't do it this way versus using an input transformer. Any additional comments and insights you have would be appreciated.