If you haven’t seen my previous blog on the NanoVNA Analyser, then I suggest you look at that first before reading this blog. This one will talk about how to connect your NanoVNA to your PC via the USB cable, so I am assuming you know the basics on how to operate it.
There is a google drive (link here) that has a lot of things on it, including manuals and software. There is lot of other things that I haven’t looked at yet also available in several languages.
If you go into the Software and Drivers folder via the link above, you will see the file NanoVNASharp.zip. Download this file onto your PC, then unzip it into a folder.
Once unzipped, you can run the NanoVNA.exe file after connecting your NanoVNA device with the USB cable. You may need to install the driver. I used the nanovna-cdc.acm.zip file you can see on the above google drive.
You may have to go to your windows device manager to check which COM Port the NanoVNA has been allocated. Below is what the program looks like (without the graph showing).
You can see above where to select the com port and connect. You can adjust the start and stop frequencies as mentioned in the last post. You can either press the Get Data button or tick the Auto Refresh box. Then you can save and open the file. I did screen shots before I adjusted my antenna, so you can open the current and old side by side and compare what your adjustments did.
Down the bottom of the chart is where you can change the chart format from Logmag to Smith Chart or SWA etc. You can also change the scale as needed.
Below is an output from my dipole antenna. You can see the SWA is very high at 3.5Mhz still but a lot better on other bands.
The other bands may not be perfect, I can now zoom in to each band one at a time and see how the antenna works across the selected band more accurately.
I would value your thoughts on this and if you found it interesting. Please send me an email or post a comment below.
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