Difference between revisions of "Crystal Filter Design"
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* [https://kitsandparts.com/XF.php Kits and Parts dot Com Crystal Filter] | * [https://kitsandparts.com/XF.php Kits and Parts dot Com Crystal Filter] | ||
| − | + | === Schematic === | |
[[file:XF2.SCH.png]] | [[file:XF2.SCH.png]] | ||
| − | + | === PCB === | |
[[file:XF2.PCB.png]] | [[file:XF2.PCB.png]] | ||
| − | + | === Notes === | |
| − | + | ||
| − | + | * T1 & T2 are optional matching transformers. | |
| − | + | * Typical transformer type will be a BN-43-2402 using 34 gauge magnet wire | |
| − | + | * C3a,C4a,C5a,C6a are optional trimmer capacitors for fine tuning the crystal filter | |
| + | * Typical trimmer caps are GKG50015 | ||
== Videos == | == Videos == | ||
Revision as of 18:42, 27 August 2021
Design
- Butterworth, Chebyshev filters
- Narrow bandwidth filters for CW or SSB
- Several crystal filer designs
- Bin crystals using Colpitts Crystal Oscillator
- Hand select close values from a pile of crystals
W7ZOI Filters
CW 5 Crystal
SSB 4 Crystal
SSB 6 Crystal
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
Kits and Parts dot Com Crystal Filter Kit
Schematic
PCB
Notes
- T1 & T2 are optional matching transformers.
- Typical transformer type will be a BN-43-2402 using 34 gauge magnet wire
- C3a,C4a,C5a,C6a are optional trimmer capacitors for fine tuning the crystal filter
- Typical trimmer caps are GKG50015
Videos
IMSAI Guy Videos
Gregg Messenger VE6WGM
Charlie Morris
- Jan '21 - Simple SSB Rig: Part 3 - Crystal Filter
- Mar '20 - CW Rig. Part 1 - Homebrew CW Crystal Filter
- Aug '18 - Homebrew 80/40m SSB/CW Rig - #4b CW Crystal Filter
- Jan '18
W2AEW
W0QE
Amateur Radio VK3YE
bill ncham
