Preparing for Field Day this year, I wanted to build a few BandPass Filters for the main bands I plan to operate on.
Notably 80/40/20 meters.




Some additional ref sites I am using.

https://www.arrl.org/files/file/Technology/tis/info/pdf/8809017.pdf
http://www.kg4jjh.com/pdf/Contest%20Bandpass%20Filters.pdf
https://va6am.com/2019/04/10/low-power-bpfs/
http://www.pa5ca.com/pa6z/PROJECTS/BANDFILTERS/bandfilters.html