I posted this on Github

Bug report
ExpertSDR3
Version 1.0.7 beta
BUILD: 12012024
PC HP Elitebook 8460p Core i5
W10 Pro 22H2 OS built 19045.4046
SunSDR2PRO EED05131900662

**Bug 4: TX IMD issue related to VSWR:**

I was just testing the IMD using the built in two tone generator on my system using the sampling output on my antenna power meter to my spectrum analyser.
I noticed huge difference between the different bands, on some bands barely reaching 30 dBc @ 3,5W output (while the SunSDRPro2 said 8W)

Then on 10 meters I had a huge -47 dBc IM3 until I accidentally switched to the wrong antenna and the IMD jumped from -47 to -19 dBc !!!

This is how I discovered that the TX IMD decreases dramatically when the antenna VSWR goes up.

My best guess is this might be because of too tight coupling of the reflected power detector causing the diode there to make wreak havoc.

It is a serious issue as not all power amplifiers behind the SunSDRPro2 have great input VSWR.

I have te following problem:
On the dummy load my SunSDr DX is ok,
but using good working antenna, (that I use with other radio, with good SWR , checked condition also with nanovna , swr meter and other radio as Yaesu 101MP and ICOM 7610),
swr report of ESDR3 is totally abnormal !
SWR on 20 and 6 meters is out of scale !
I think that the circuit that give swr data is out of calibration....
When swr measure is totally different from instrument, power indicator of ESDR3 V1.0.7 show over 120W of power at 13.8Volt .
Sometimes in 6 meters, SunSdr lock and is necessary to stop power supply for using it again.
No solutions at moment.
I am waiting support for a test.

did you post it on the github bug report page ?

I noticed while running remote the current meter in the bottom shows 10 tines the real valu.

No, I hope to post today in GitHub.
The swr bad value is reported in my case in local !
Thanks