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Just found new firmeware dated 20190705 on the well known google drive. Ernst

Folks, There appear to be two locations on GitHub for the nanoVNA firmware: original: https://github.com/ttrftech/NanoVNA hugen: https://github.com/hugen79/NanoVNA Both appear to be old and haven't

May I suggest that when the nanoVNA boot screen occurs, THE BOOT MESSAGE HAS THE FIRMWARE VERSION AND DATE AND TIME. THIS IS WHAT THE BIG BOYS DO. ________________________________ Sent: Friday, July

Hello hugen, thanks for your hard work. Where can we track your FW releases? Cheers! LL

is there anyway to know if this one is a bad clone ? This is what I have placed an order for but not shipped yet. I can still cancel it. Thanks !

That's all there is to it. Connect the open , press open. Connect short, press short etc. Frank

Hello hugen, I am very glad that you are taking care of my problem. So I do not have to send my unit back. Thank you in advance for your efforts. Ernst

Two bad clones have been found, they have failed to understand the role of bridge and shielding, and made some bad modifications to facilitate manufacturing.

Hi Siggi/Hugen, I have managed to place an order using the Chinese taobao site, which was rather interesting as I cannot read Chinese at all :) Hopefully you got my order in your shop Hugen ! I found

Thank you, Siggi You can try switching the regional options of Taobao.

Hello dk1vi , Peaks occur because si5351 is w

I just had the same idea. Scan from 50MHz to 200MHz for example and the plots look good. Tomorrow I will inspect the PCB and see if all components are soldered properly. Ernst

Understood Ernst. Good observation. It will be of interest if other users report this situation. I assume if you do a cal that eliminates those frequency points, that is select a stimulus frequency

Alan, the peaks are always on the edges of the three frequency ranges 52k-300MHz, 300-600MHz and 600-900MHz. So I think it has somethoing to do with the timing of range switching. Probably the

Hi Ernst. I would check with care that the SMA terminations during cal are all secure. I would like to use a torque wrench designed for proper tightness for each piece. However, these connectors on

You may wish to check your sNp file. There could be an interpolation issue that is creating the discontinuity. I have seen such problems in "professional" SW like ADS and Microwave Office.

Hi Alan, your plots look excellent, I wish mine would look same. The peaks are not related to the nanoVNA software V1.03. I see the peaks when I use the nanoVNA not connected to the laptop. Ernst

Good day, Ok, I just took a measurement after cal with the nanoVNA and then captured that data using their SW, There are two measurement .jpg attached. The first is their 50 termination after cal.

no the OP, dk1vi, has his nanoVNA. I am waiting on mine

You are waiting on the unit to be shipped. So I assume this is a measurement of another VNA using whose 50 ohm termination? Is the issue you are raising the software or the hardware? I can input a