Difference between pages "VFO-003" and "WA3TFS SDR Upverter Design"
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== Features == | == Features == | ||
| − | + | SDR up-converter/receiver shifts low frequencies up by 100 MHz. Used to listen to HF frequencies on an inexpensive RTL-SDR module. | |
| − | * | + | * $55 at W3PIE hamfest |
| − | * | + | * SBL-1 mixer |
| − | * | + | * 100 MHz can oscillator |
| − | ** | + | * Low pass filter |
| − | * | + | * [https://044640f.netsolhost.com/ 1 kHz to 1.7 GHz SDR Receiver] - WA3TFS Design |
| − | * | + | ** [https://rest.edit.site/filestorage-api-service/23f1203e3bd4a6128459f208dcf16362/forkiin-sdr-qst-article.pdf?dl=1 QST Article] |
| − | + | ** [https://static-cdn.edit.site/users-files/73eecae7c71adfad0f97a69e16be7203/sdr-wiring-diagram(3).pdf?dl=1 SDR wiring diagram] | |
| − | + | ** [https://static-cdn.edit.site/users-files/e5b0fbd1d917fc766cf2197693d69209/bill-of-material-sdr-rev-1-3.pdf?dl=1 Parts List] | |
| − | + | ** [https://static-cdn.edit.site/users-files/21f2eeabc8074f4bc64a7b350b8b52e1/pcb_r11.jpg?dl=1 Layout] | |
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| − | === | + | === Schematic === |
| − | + | [[file:WA3TFS_Upverter_Schematic.PNG]] | |
| − | + | == Software == | |
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| − | * | + | * [https://www.rtl-sdr.com/ RTL-SDR] |
| − | * | + | * [http://hdsdr.de/ HDSDR] - Easier to use |
| − | * | + | * [https://airspy.com/download/ SDR Sharp] - Crashier |
| − | + | == Build == | |
| − | + | * Nice silver mica caps | |
| + | ** My kit was missing the center cap of the band filter (150 pF) | ||
| + | * Real SBL-1 mixer | ||
| + | * Cap installed in J_A to J_B marked 300 | ||
| + | * Build was tough due to very small pads on the PCB | ||
| + | ** Particularly tough to solder ground pads | ||
| + | ** Pad shapes were not round so less area to set soldering iron | ||
| + | * Pin 1 orientations on the mixer and oscillator "backwards" from other board legends | ||
| + | ** Pin 1 shown in red | ||
| + | [[file:WA3TFS_Upverter_pcb_r11.jpg]] | ||
| − | + | === Wiring === | |
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| − | [[file: | + | [[file:WA3TFS_Upverter_Wiring.PNG]] |
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| − | + | == Enclosure == | |
| − | + | * Board fits perfectly in | |
| + | ** [https://www.adafruit.com/product/2230 Extruded Aluminum Enclosure Box - 94mm x 83mm x 30mm] | ||
| + | ** Card just perfectly matches | ||
| − | [[file: | + | [[file:Adafruit_2230-00.jpg]] |
| − | [[file: | + | [[file:2230-03.jpg]] |
| − | == | + | == Videos by others == |
| − | + | <video type="youtube">XeQnDpzhcRo</video> | |
Revision as of 12:42, 14 October 2021
Features
SDR up-converter/receiver shifts low frequencies up by 100 MHz. Used to listen to HF frequencies on an inexpensive RTL-SDR module.
- $55 at W3PIE hamfest
- SBL-1 mixer
- 100 MHz can oscillator
- Low pass filter
- 1 kHz to 1.7 GHz SDR Receiver - WA3TFS Design
Schematic
Software
Build
- Nice silver mica caps
- My kit was missing the center cap of the band filter (150 pF)
- Real SBL-1 mixer
- Cap installed in J_A to J_B marked 300
- Build was tough due to very small pads on the PCB
- Particularly tough to solder ground pads
- Pad shapes were not round so less area to set soldering iron
- Pin 1 orientations on the mixer and oscillator "backwards" from other board legends
- Pin 1 shown in red
Wiring
Enclosure
- Board fits perfectly in
- Extruded Aluminum Enclosure Box - 94mm x 83mm x 30mm
- Card just perfectly matches
Videos by others
