Then I tried to reproduce the measurement of Tom by setting my SI5351 to the same frequencies.
That failed as my SW for setting the SI5351 probably works in a different way.
Here I have two measurements that show the huge impact of changing another output
First the outputs are set at 45, 80 and 160MHz, all multiples of 5MHz.
Then I moved the 160MHz output to 161MHz
This seems to suggest you can not compare any SI5351 measurements unless you replicate the exact settings of the 2 VCO's and the 3 factional output dividers.
