I started looking at some narrow band mechanical filters.
The measurement was challenged to look at a 500 Hz wide 455 kHz filter.
I will double check if the limits are 101 data points/interpolation or simply LO jitter.
It was very difficult to discern the transition skirt band.
However, other somewhat wider mechanical filters worked out well as shown here.
A 88 kHz sideband filter and a classic 455 kHz filter from a Collins. These were both
headed to the land fill. Such a shame. Here old meets new! Alan
