Dave,
I searched "ubitx cw crystal filter" using Google and found the following:
/g/BITX20/topic/23176080Most hams (including myself) use audio filters for CW.? They are easier to implement and do not require software changes.? Here are details on that approach by K4LXY:
You can also search in Groups.io directly, but I have found that interface challenging to use.
Note that I am NOT a CW operator.? The mods I made were for other hams that operate CW.? All have been happy with the results.
Raj may have better information than I do.
73
Evan
AC9TU
