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There is evidence in the Open and Load calibration measurement of something weird happening when going into harmonics mode, it is if the ratio of the reference signal and the measurement signal

So I did the same coax stub comparison between the V2 and the xaVNA (see attached). The measurements agree to about 0.1dB and those ripples are either physical or artifacts of my cal kit. The coax

If my hypothesis is correct then that means the impedance of the DUT at say 250MHz will affect the measurement at 750MHz. A possible way to check is to measure a resonator with a sharp dip at 250MHz

The NanoVNA plot of the coaxial stub shows a few ripples that are unphysical (see attached image). It is unlikely the loss of the coax suddenly increases like that with frequency, and as your home

Hi Bryan, thank you for looking into this! I have user selectable scaling on the list for probably the next release, but I hadn't yet realized, that there might be cases where a cable would show a

Hi Herb, I hope someone will be able to help you with the understanding - And I will be following along the thread closely, as I too am not entirely certain what it's telling me ;-) I have put the

Dear GIN & PEZ I must, unknowingly, have asked a very wrong question. Apologies for that. The reason for asking was the simplification to the formula G=m/s I was assuming, probably very wrong, that

Thank you GIN & PEZ; Your post #6529 #73': On the sine qua non Core Uncertainty of AnyVNA - incl. NanoVNA - System (the message #73 is withdrawn mainly because its conclusion is too weak) Seems to add

Hello Kurt, After reading T-Check.pdf from you from 2010-01-31, I tried http://www.hamcom.dk/VNWA/T-Check_HD_Install.zip under Windows 10-64 The Installation files are from 1997. When trying to start

Rune, Thanks for the new release and your continued work on this project. I took a quick look at your new TDR output. Not sure what is happening with the new TDR plot you are displaying. The impulse

I am preparing to update the PCB version of NanoVNA-H to V3.4. The UART port will be reserved，hhis makes it easy to DIY Bluetooth connection. It is expected that the relevant test will be completed

I believe I can apply stuff from the links. Thanks. But I 'll need to read ALL messages first to comment on them. Since I do not see how to reply to the thread and not to single message , posting this

Thank you GIN & PEZ -- 73 Gary, N3GO

it's not clear what you're expecting and what is wrong... Could your please explain? In general I see some issues with divider: 1) Two 20 k resistors leads to 40k continuous load on the battery. So,

I used resistors to make a voltage divider, and tied the 20K across D2 and the 100K from D2- to C47 gnd. In the attached image, currents with VBATEN on and off show 60 and 35 uA, respectively. One

Rune, I'm still hoping someone can help me understand the new TDR impedance measurement display ( see message /g/nanovna-users/message/6520 ). One other thing in regards to the TDR

#73': On the sine qua non Core Uncertainty of AnyVNA - incl. NanoVNA - System (the message #73 is withdrawn mainly because its conclusion is too weak) erik@... - 5 November 2019 :

Hi Rudi Understood, thank you. UPS about the R&S TR-Check have you tried to run in W95 compatibility mode and as administrator ? Kind regards Kurt -----Oprindelig meddelelse----- Fra:

Hi Sam, you're welcome :-) I have considered interpolation; but my original idea for the software was to allow more data points to avoid interpolation, and instead provide better data resolution. For

Rune, Thanks for the new version. Has anyone given any thought to using interpolation to display the data between the measurement points when in line mode? Sometimes more often than not there isn't a