Difference between revisions of "SSB6 Design"
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| + | == References == | ||
| + | |||
| + | * [https://sq2gxo.wordpress.com/2010/04/05/crystal-ladder-filters-i-software/ Crystal ladder filters – Software] | ||
| + | * [https://www.arrl.org/files/file/QEX_Next_Issue/Nov-Dec_2009/QEX_Nov-Dec_09_Feature.pdf Crystal Ladder Filters for All] - ARRL QEX | ||
| + | * [http://fa-nwt.akadns.de/blogs/media/blogs/dj6ev/quarzfilter/deDishal2026.zip DISHAL software by DJ6EV] | ||
| + | * [http://jvgavila.com/other/Crystal_Test_Set.pdf A Practical Test Set for Comprehensive Crystal Testing] | ||
| + | * [http://pages.suddenlink.net/wa5bdu/crystal_slide_show.pdf Crystal characterization and crystal filter design] | ||
| + | * [http://www.hanssummers.com/xtalchar.html Crystal parameters Written by Hans Summers] | ||
Revision as of 16:02, 26 September 2021
Design
- W7ZOI Crystal Filter paper has several crystal filter designs
- Narrow bandwidth bandpass filters for SSB
- Used for transmit/receive
- 9 MHz nominal frequency
- Bin crystals using Colpitts Crystal Oscillator
- Hand select close values from a pile of crystals
- Can get much closer than 10% of bandwidth with 50 crystals
- Crystal Filter Design - Other filter builds
W7ZOI SSB6 Schematic
My Build
- SSB6 filter is too big for Kits and Parts board
- 2500 Hz bandwidth
- Fits in 80x50 extruded enclosure?
- Too tall???
