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antennas:endfednotune [2019/09/05 22:20] f4ija |
antennas:endfednotune [2020/01/31 13:53] (current) f4ija |
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Also, I've salvaged some computer PSU and I was able to disassemble some coils and have some tore wires. | Also, I've salvaged some computer PSU and I was able to disassemble some coils and have some tore wires. | ||
- | The caps are very common, instead I didn't have the 150pf cap in stock. I put 2 caps in serie of 100pf and 47pf, so the equivalent cap is 147pf. I think it's close enough to work. | + | The caps are very common, instead I didn't have the 150pf cap in stock. I put 2 caps in parallel of 100pf and 47pf, so the equivalent cap is 147pf. I think it's close enough to work. |
===== 3D design ===== | ===== 3D design ===== | ||
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It's simple but it works. | It's simple but it works. | ||
- | {{ :antennas:cad_image.png |}} | + | {{ :antennas:cad_image.png?400 |}} |
===== Photos of the build ===== | ===== Photos of the build ===== | ||
I used 0.25mm² copper wire for the antenna. The length you see on the photo is 20 meters, for the 40m band. | I used 0.25mm² copper wire for the antenna. The length you see on the photo is 20 meters, for the 40m band. | ||
- | {{ :antennas:img_20190830_173236.jpg?500 |}} {{ :antennas:img_20190830_173532.jpg?500 |}} | + | {{:antennas:img_20190830_173236.jpg?300 |}} {{ :antennas:img_20190830_173532.jpg?300 |}} |
===== Tests of this antenna ===== | ===== Tests of this antenna ===== | ||
**TO COMPLETE** | **TO COMPLETE** | ||
===== Files ===== | ===== Files ===== | ||
+ | You will find in the archive below the CAD files (SCDOC for SpaceClaim and STEP for global import), STL files for printing it, schematic and also instruction PDF from QRPguys. | ||
+ | {{ :antennas:antenne_end_fed_no_tune.zip |}} | ||