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Which VNA. Some early versions on nanoVNA has spikes when switching from fundamental to harmonic mode. The fix was to lower transition frequency. Some other versions could not handle the high

Ted, See Msg. #38300. I thot I'd messed mine up trying to upgrade the f/w by the DFU mode, but Stan talked me thru it, and now it works fine. There's a lot of good help here. jbl

Permanent installation of the following would go a long ways in protecting the S11 or source port: VLM-33W-2W-S+ From Minicircuits. It's presently under re-design, but is available and is designed to

Alan, I want the program to show what's in a file, not a sanitized version. Note that cubic spline interpolation, the kind of spline I'm familiar with, can yield points well away from a reasonable

Sorry for the bandwidth. Brian, two simulators failed to read the Johanson file correctly. However, a Keysight simulator had no issue. Operated fine. Here is s11,s22, and 20000 data points and of

Which one? NanoVNA V2 frontend is quite different from H4 (for example). [email protected]> wrote:

Terry, Can you please explain the RF exposure or ESD which caused the failure so that I can take precautions? 73 Jon, VU2JO [email protected]> wrote:

Sad to report that, for the second time, my nanovna is broke from RF over exposure or ESD. My question is: can I protect the input with some fuse- or similar over-load protection device? Yes, I will

Use a different USB controller on your computer and check the USB cable. [email protected]> wrote:

It connects, firm ware is the latest for the H model, i fellow the steps in the guide, the dfu demo software starts as normal starting delete phase, takes 18 hrs, now im in down load phase and its 4

Dave, Good overview. I think it is worth to add a little bit more to point 2 of the recommendations. Because in case one is measuring a reactive component at a frequency range of interest, which

Dave you'll have to swap the Above & Below in the first lines on page 2 ... 73 Luc ON7DQ

Delete phase? There is not normally a separate delete phase in nanova firmware loading. Most of the programming methods have you a) attach to nanovna in dfu update mode, b) Select and outload the new

I guess I bricked it. Nanovna H. 3 days of trying to reput the firmware back on it. Can't get it to even delete phase.

Thanks a lot Dave. Shall go through it and get back to you. 73 Jon, VU2JO [email protected]> wrote:

Okay! Great! Thank you! Yahoo Mail: Search, Organize, Conquer On Thu, May 15, 2025 at 13:35, Team-SIM SIM-Mode via groups.io<sim31_team@...> wrote: Hi Roger Thanks , I re do the

I've had several requests on reading the values of inductors and capacitors using the NANOVNAs. I've put that together in the attachment to this email. If you want to learn how it's done using the

Please let us know where you are going with this Simply trying to take the data from the graphic presentation and try to provide an appropriate explanation and interpretation. The power of any GRAPHIC

Dave, I think Alan is pointing out that I'm using port 1 data for a component measured between the two ports. True, but I'm just using the data to exercise my program, not to draw conclusions about

Please let us know where you are going with this: QUOTE: s11 measure in series mode between the channels. S11 and S22 are reflection measurements. Dave - W?LEV [email protected]> wrote: -- Dave -