The current circuit board amp wide-band performance is not correct. I have to investigate the cause and correct.
This test is with 1W drive from 160–10M. We are looking for a flat dB gain characteristic. Obviously, we are not getting it but I am not discouraged. It is a mystery to solve.
I suspect the answer to be found in one of these areas:
- Output transformer
- Input transformer
73, K5OOR – Virgil