| #617 How to Design a Crystal Filter IMSAI Guy |
| #617 How to Design a Crystal Filter I show my design for a radio IF bandpass filter made with four crystals. Some theory, some schematics, some design, some measurements. Here is the article I showed: https://www.arrl.org/files/file/QEX_Next_Issue/Nov-Dec_2009/QEX_Nov-Dec_09_Feature.pdf https://youtu.be/3uRA1p6OotA |