I am also interested in seeing filter plots measured on a professional test instruments.Not much information is available on topic. Dishal predicts totally different values for capacitors and impedance for same xtal parameters than the software from EMRFD.?
Pete N6QW has also put up on his blog having some frustrating time with the filters calculated in Dishal.
I too conducted some experiments with my homebrewed SNA, yes indeed pass band ripple was low but the was not satisfied with the filter skirt. Possibly my parameter measurements were not that precise.
Lately I have started experimenting with a different xtal filter . The half bridge lattice by OM? Rolf Heine DL6ZB
?An 8 xtal dual cascade appears to be an attractive option for following reason:
Simple in design , highly compatible with uBitx architecture and TIA's strong Z's. Xtal matching need not necessarily required and more poles of filtering for same number of? xtals, Easy bandwidth change same filter can perform dual function for SSB as well as CW? and yes the bifilar coils can be the existing matching transformer.?
In his discussions on Facebook groups OM Rolf has posted couple of multi pole designs ,need to look around.
