![]() ![]() I pot the assembled and tuned matching network with Gorilla Glue 5 Minute two part clear epoxy. And I find it easier to swap out toroids than to try to remove or add turns while the toroid is mounted on the board. This makes it easier to play with spacing to get a targeted inductance. Rather than adding or subtracting turns on one toroid I wind two toroids with different number of turns. Often you have to decide whether to use n turns or n + 1 turns on a toroid. The calculated inductance for toroids is not always close to actual value due to winding spacing and toroid material variance. There are various discussions on accuracy but it will get you in the right ball park. Premeasure the inductors and capacitors with the nanoVNA at the frequency of interest before using in the matching network. The nanoVNA measured high reactance impedances better than standard antenna analyzers designed mainly for SWR measurements. The readings were affected not accurate and consistent. There was just too much RFI from the laptop and power supply that was being picked up by the antenna. Some of my initial measurements where performed with the nanoVNA connected to a computer using nanoSaver software. When measuring ZL impedance use the nanoVNA by itself and use its file saving capability to retain the. If needed, I could remove the 10 pF and substitute a 5 pF or 15 pF capacitor to fine tune the match. I mounted a 47 pF NP0 ceramic SMT capacitor in the BNC connector itself, followed by a 15 pF and 10 pF parallel NP0 SMT capacitors on the protoboard that the matching network was built on. The mounted BNC showed around 7 pF capacitance, leaving about 71 pF of additional capacitance. I also measured the capacitance of the BNC connector using the nanoVNA and verifying with an autozeroing small capacitance meter. This made me decide to use a set of parallel capacitors so I could fine tune the value that will provide a close match, this turned out to be a good decision. Large changes in capacitor value will prevent the match to be close to the chart center, no matter the value of the inductor. Changes in the capacitor value keeps the network from moving along the 50 ohm constant resistance curve to the center. The most sensitive value seemed to be the capacitor. Essentially, Wine is trying to re-implement enough of Windows from scratch so that it can run all those Windows applications without actually needing Windows.Initially I looked at how the match varies with changes in the component values. Wine is an open-source Windows compatibility layer that can run Windows programs directly on any Linux desktop. Wine is a way to run Windows software on Linux, but with no Windows required. You can also try PlayOnLinux, a fancy interface over Wine that will help you install popular Windows programs and games. Once installed, you can then double-click the app to run them with Wine. ![]() Download Wine from your Linux distributions software repositories. From the OnWorks Windows OS you have just started, goto our file manager with the username that you want. Start any OS OnWorks online emulator from this website, but better Windows online emulator. Upload this application in such filemanager. ![]() ![]() Enter in our file manager with the username that you want. Download and run online this app named Smith Chart Calculator to run in Windows online over Linux online with OnWorks for free.įollow these instructions in order to run this app: ![]()
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