Next time can you please test without an antenna or into a dummy load (just on receive) to see if tuning your radio across 40m, you get the interference I got when testing here into a dummy load. When there is an antenna attached, I can no longer hear the interference as the band’s background noise is higher.
In your article, you said
" The bad report I got from EI7JN was because I had put the ATU in AUTO mode again, and halfway each transmission it started retuning, but then stopped at a bad SWR, "*
- that sounds like a similar problem to what I had during the Portable Operations Challenge with the unit tuning to a bad SWR and the power output dropping.