Jerry and Curt,
Like Jerry, my main reason for pursuing the 40meter CW dip is to understand the root cause.? I do not really use CW, so it is not that I want to operate in that mode so fixing it with Q90 gain does not really meet my need.? It is that I have noticed a pattern that I am trying to understand, as well as verify that it is a pattern and not a figment of my imagination.
I had read the original thread on working to even out the power on all of the bands.? I had read Curt's post before, I had just forgotten it, and as Jerry pointed out, it is a fix and not really the root cause at least as far as the scope traces I have made are pointing out.
My plan of attack later today is to first see if my one "parts" / experimental v4 has exactly the same issue.? It is already in a state that makes it easier to dissect and probe.? If that is the case, then I will proceed to the steps that Jerry has laid out to try to see if it is a mixer termination issue.? I also want to verify that the SSB power measurements did not give 40meters a higher power reading due to any spurious signals associated with the 40meter mixer sensitivity to the CW unbalancing.? I do not have a Rigol/Siglent level of a spectrum analyzer.? Only a TinySA for harmonics and an RSP1A with SA software for close-in spurs and IMD measurements.?
It might take more than a day or two to go through the testing, so my next post on the topic might be after Easter.? Last-minute requests by kids and family have again changed my schedule and plans.
Thank you both for all of the insights that you have given me.? This is FUN!
73
Evan
AC9TU
