Difference between pages "SSB6 Assembly Sheet" and "SSB6 Design"
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| − | [[FILE: | + | [[FILE:SSB6-smaller.png]] |
| − | == | + | == Design == |
| − | + | * [http://w7zoi.net/filters/9megxfils.pdf 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 | |
| − | + | * [[W7ZOI Filters on Kits and Parts Boards]] - Other filter builds | |
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| − | + | === W7ZOI SSB6 Schematic === | |
| − | + | [[file:XTAL-SSB-6Crystals.PNG]] | |
| − | + | [[file:W7ZOI_SSB6_Curve.PNG]] | |
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| − | * | + | == My Build == |
| + | |||
| + | * SSB6 filter is too big for Kits and Parts board | ||
| + | * 2500 Hz bandwidth | ||
| + | * Fits in 80x50 extruded enclosure? | ||
| + | ** Too tall??? | ||
| + | |||
| + | [[file:SSB6_SCHEMATIC.PNG]] | ||
| + | |||
| + | [[FILE:SSB6_3D_ANGLED.png]] | ||
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| + | [[file:Case_80x50.jpg]] | ||
| + | |||
| + | == 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] | ||
| + | |||
| + | == Assembly Sheet == | ||
| + | |||
| + | * [[SSB6 Assembly Sheet]] | ||
Revision as of 11:00, 15 October 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
- W7ZOI Filters on Kits and Parts Boards - 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???
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
