My sweeps were done into a little 4-resistor dummy load. They seem consistent enough, but I could try it on a shielded load.
I don't imagine I'd know there was a problem if I didn't have the sweeps. Given how weird the results are and how few things there to go wrong in the simple filter circuit vs how normal the radio acts, I'm wondering if the problem is on the sensing side of things. That definitely seems like a Hans question.
¨CBrent WT4U
