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| − | [[file:WA3TFS_Upverter-720px.jpg]]
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| − | == Features ==
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| − |
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| − | SDR up-converter/receiver shifts low frequencies up by 100 MHz. Used to listen to HF frequencies on an inexpensive RTL-SDR module.
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| − |
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| − | * $55 at W3PIE hamfest
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| − | * SBL-1 mixer
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| − | * 100 MHz can oscillator
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| − | * Low pass filter
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| − | * [https://044640f.netsolhost.com/ 1 kHz to 1.7 GHz SDR Receiver] - WA3TFS Design
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| − | ** [https://rest.edit.site/filestorage-api-service/23f1203e3bd4a6128459f208dcf16362/forkiin-sdr-qst-article.pdf?dl=1 QST Article]
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| − | ** [https://static-cdn.edit.site/users-files/73eecae7c71adfad0f97a69e16be7203/sdr-wiring-diagram(3).pdf?dl=1 SDR wiring diagram]
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| − | ** [https://static-cdn.edit.site/users-files/e5b0fbd1d917fc766cf2197693d69209/bill-of-material-sdr-rev-1-3.pdf?dl=1 Parts List]
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| − | ** [https://static-cdn.edit.site/users-files/21f2eeabc8074f4bc64a7b350b8b52e1/pcb_r11.jpg?dl=1 Layout]
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| − |
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| − | === Schematic ===
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| − | [[file:WA3TFS_Upverter_Schematic.PNG]]
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| − |
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| − | == Software ==
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| − | * [https://www.rtl-sdr.com/ RTL-SDR]
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| − | * [http://hdsdr.de/ HDSDR] - Easier to use
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| − | * [https://airspy.com/download/ SDR Sharp] - Crashier
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| − |
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| − | == Build ==
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| − |
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| − | * Nice silver mica caps
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| − | ** My kit was missing the center cap of the band filter (150 pF)
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| − | * [https://www.minicircuits.com/pdfs/SBL-1+.pdf SBL-1 mixer]
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| − | * 30pF cap installed in J_A to J_B marked 300
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| − | * Build was tough due to very small pads on the PCB
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| − | ** Particularly tough to solder ground pads
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| − | ** Pad shapes were not round so less area to set soldering iron
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| − | * Pin 1 orientations on the mixer and oscillator "backwards" from other board legends
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| − | ** Pin 1 shown in red
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| − | [[file:WA3TFS_Upverter_pcb_r11.jpg]]
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| − |
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| − | === Wiring ===
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| − | [[file:WA3TFS_Upverter_Wiring.PNG]]
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| − |
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| − | == Enclosure ==
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| − | * Board fits perfectly in
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| − | ** [https://www.adafruit.com/product/2230 Extruded Aluminum Enclosure Box - 94mm x 83mm x 30mm]
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| − | ** Card just perfectly matches
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| − | [[file:Adafruit_2230-00.jpg]]
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| − |
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| − | [[file:2230-03.jpg]]
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| − | == Videos by others ==
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| − |
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| − | <video type="youtube">XeQnDpzhcRo</video>
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