I have searched the archive and saw some discussion about this topic in January this year but don’t know what the current status is. I am using PothosFlow with the following simple graph:
And when I feed the LNAW antenna ports through a splitter with a 400 MHz signal, I get the following:
which, if there is no error in my graph seems to indicate that the phase (in radians) seems to be varying periodically.
As you can also see on the 2nd screenshot, there is a warning about Channel alignment failed which might explain an issue at the beginning but unless it is recurring, I would still expect the phase delta to be constant-ish.
I presume that I am doing something naive but cannot work out what.
Any help appreciated,