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NanoVNA H and H4 have SD card support for store s1p/s2p files and screenshots If use external software (like NanoVNA-App) you can save on CPU every measure (see screenshots) You can use Bluetooth (or

Jerry, I had suggested to DiSlord if it would be possible to add an SPI based flash chip to the nanovna firmware but never heard back. Something like that would be ideal for streaming data to - but

Thanks Stan, I had seen that number off to the right of time in ns, but couldn't figure out what it was. In part because the "m" looked like an "n" on this tiny screen. But now that I know what it is,

Christian, My apologies for the rather grumpy reply of my earlier post. If you have a fix, by all means submit it to the repositories. They will either include it or not. In my defense, that struck me

Thank you ! I'm sure several of us will build/flash/play with it and provide feedback in the forum. Cheers, Larry

Ok, as a first step I made my changes public in my own fork/repo: https://github.com/czietz/NanoVNA-H/tree/window_loss. Sorry, no prebuilt binaries; but this way at least those of you who compile

All valid comments for one reason or another. Many folks do ask for improved functionality, and the relatively few people actively developing for the box as volunteers can easily feel like they're

Hi Christian, my opinion is that your proposal to correct the artifact that currently are present on FW available versions is strongly welcomed! At least I strongly believe that any upgrade is

Some of the coders that contribute to this project are a bit thin skinned and people here are kind of protective of them. Anyway if you have found a flaw (which this is) you should definitely post

Hi Christian, Only one member reply talked about 'pissing-off' the devs, which happened when a former forum member demanded that a dev share their code - and the dev shut down their repo to

Larry, I'm all for contributing changes back to the community. I'm a maintainer of multiple open-source SW projects, too. However, the feedback I got to my first email when I courteously wanted to

So Christian - you're telling the forum members that Nano's firmware is not accurate (in one area) and that you've fixed it in you own private repo, but you're not willing to share the changes with

Thank you, everyone, for your comments. However, imho, the fact that the NanoVNA is an inexpensive device is no excuse for not correcting a systematic error and not making the NanoVNA an even better

Thank you, John. That makes sense to me, and if this is all correct it also explains the strange 39 vs 100 issue - I think you are saying that the display is only showing the first 39ns of the 100ns

Jerry, when you turn the 'transform' on, the marker value display at the top right of the screen (the one in white, labeled "1:"), reads in both nsec and mm or meters, so you can read the

Stan, Your tmax is the maximum delay shown on one screen of the display, but the maximum delay that can be unambiguously displayed (with added Electrical Delay) is longer. At 1000MHz, 101 points, tmax

Stan, Thanks for all that, it mostly makes sense. With a stop freq of 100mhz, I do see a display that maxes out at 390 ns. This agrees with Neil's 39/fmax formula. 390e-9 * 3e8 * 39.37/12 / 2 = 192

Sorry I didn't reply again - I was on lunch break and had to go back in to work (thankfully I can still go to work!) As John noted, you can set the Velocity Factor: it is at the end of the transform

I came across the W2AEW videos long before the NanoVNA came out. They are well scripted, succint and full of good information on a wide range of interesting electronics topics. The author is a

Thanks, I'll look for it! Jerry