I apologize for the rash of postings.
Here is a quick list of URLs to see some online material
on crystals and matching methodology.
~
1.? Look at the web page for Jim, K8IQY.? Must read and look at his table (on a separate page
??? that he links to.? Also note his research on grounding the crystal case.? Diz in the 5W
??? and 1W grounds the crystal cases.? I don't, but that his my own OCD problem.
2.? The last link by Murata.? Section 3.? Note the effect of a 1pF error in the interstage
??? capacitors and the effect of the shape and bandwidth.? How many of us match the caps.
??? Looks like it is more important than matching the crystals at first glance.
3.? Giangandi has an online calculator with choices of the number of poles for the filter.
FYI
chuck, k7qo
