But I do have everything else I need: 2-tone generator, directional coupler, fixed attenuators and a tinySA Ultra.
With Hans G0UPL making great progress in developing firmware that will allow SSB operation with QMX/QMX+ transceivers, I wanted to know if the tinySA Ultra will allow measurement of IMD.
Hans' method of SSB generation is unique and it will be interesting to see how the transmitter output looks compared to more traditional rigs.
The original tinySA does not have the resolution bandwidth needed to make IMD measurements, but the newer Ultra version, with 200 Hz minimum RBW, does.
My test subject was the KX2 on 20m phone.