Crystal Filter Design
W7ZOI Filters
CW 4 Crystal
SSB 4 Crystal
SSB 6 Crystal
https://www.youtube.com/watch?v=xnUMzz0vo9U
References
- Crystal ladder filters – Software
- Crystal Ladder Filters for All - ARRL QEX
- DISHAL software by DJ6EV
- A Practical Test Set for Comprehensive Crystal Testing
- Crystal characterization and crystal filter design
- Crystal parameters Written by Hans Summers
Videos