On Sun, Oct 22, 2023, 12:29 PM Ryuji Suzuki AB1WX <ab1wx@...> wrote:
Completely speculative here, but winding capacitance, the leakage inductance or both may be affecting the apparent input impedance you measure. Can you add a 10pF or 22pF or something in parallel to the input terminal and see the same phenomenon happens only more distant from the LO freq?
