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For more flash memory, the STM32F072CBT6 ( note: CB instead of C8 ) has 128k flash instead of 64k and will work without hassles. I have heard that sometimes the C8s where actually CBs, therefore you

The main limitation to putting the TDR function on the device is RAM. You can write the FFT to pad the end of the frequency domain array with zeros without using up memory, but you still need space

Compilation of NanoVNA source code in Windows XPx32, Windows 10x64 Installation verified, sorry for possibly inaccurate translation.

Does the software really assume an "ideal" open? In a different thread (/g/nanovna-users/message/1187), Roger Henderson mentioned that the software had programmed into it a C0 value

Excellent! Thanks

Thanks -- NICE! Although you might to change the title of of the "Reference Sweep" section of the GUI to "Import Touchstone File" or some such, since the touchstone files can now be used as either

Looks great! In the calibration section, you should get the user to calibrate the touchscreen as well. That will go a long way in making the use of the touchscreen a pleasant experience. One of my

I don't feel I know something until I touch bottom with physical reality, assuming such a thing exists. In the case of the S parameters, that means describing them as a vector ratios of two vector

Roger I am reviewing your comparison results on my phone so I may have missed something. What I see is comparisons of the S11 noise floor in the 60-70 dB range return loss. This is meaningless in the

Thanks for the suggestions! I've pushed an update to the repository implementing those two features. I also want to make the markers measure both sweep and reference data, but the UI is starting to

It would be really nice to be able to use "m" and "k" in the markers too!

I fetched today's version with the reference sweep changes -- now when I import an s1p file Iit only gets used as a reference sweep. I'd like to be able to use markers and the tdr function on

This easy to understand HP document, from which I learned a lot, could be entitled "S-Parameter Techniques" for Dummies. http://www.sss-mag.com/pdf/an-95-1.pdf

[email protected]> wrote: Thank you - that will be most helpful to me. Here are a few comments, which I hope are constructive - they are not meant to be critical. 1) I'm not really convinced an RF

Yes, a good start. I definitely learned some stuff about the user interface on this thing. I especially liked these few words about the Smith chart: Short and concise. A very good beginning. Add a few

Swapping devices would be much simpler. I'm very interested in any pin compatible device which increases RAM and flash. The major problem I have right now is this has disrupted a lot of other

I'm sure HexAndFlex will be getting a lot of "hits" on its getting started guides. Considering the fact that the nanoVNA has not been in mass production that long, the amount of chatter and

Is this a pin compatible alternative? If it is, I'm ordering a 2nd unit from China. And will be doing LQFP rework for the first time also. I had looked for a pin compatible device myself, but got

I should be able to do that.

You should take a look at https://www.sdr-kits.net/index.php?route=product/category&path=66_68_69 de Dave K5MWR