Difference between revisions of "SSB6 Design"
Jump to navigation
Jump to search
Blwikiadmin (talk | contribs) (→Design) |
Blwikiadmin (talk | contribs) |
||
| Line 16: | Line 16: | ||
** 5 or less crystals | ** 5 or less crystals | ||
| − | + | == W7ZOI SSB6 Schematic == | |
[[file:XTAL-SSB-6Crystals.PNG]] | [[file:XTAL-SSB-6Crystals.PNG]] | ||
Revision as of 12:23, 15 October 2021
Contents
Design
- 6 element filter
- W7ZOI Crystal Filter paper has several crystal filter designs
- Narrow bandwidth bandpass filters for SSB
- Used for transmit/receive
- 9 MHz nominal frequency
- 50 Ohms in/out impedance
- 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
- 5 or less crystals
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
