PA-28 experience update?
I'm curious how the experienced worked out for the original poster, since I am also in a PA-28 with the split windscreen and have had some limited success so far with a newly installed XRX model device. I'm seeing some of the ghosting and sector flip-flopping behavior for some (legitimate and observed) targets, and wonder if there are any useful suggestions.
One thing I will do is to clean the transponder antenna thoroughly and perhaps try it with two different transponders. I can also try running it off battery power rather than airplane power temporarily to see if line noise might the the culprit.
Any suggestions or Cherokee tuning experience would be welcome.