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Hello Bob, I seem to recall reading on one of the eBay vendor's auction pages for a NanoVNA, some wording that claimed the following: "The buyer should not worry that the picture shows a NanoVNA with

There are good designs for 9:1 or higher ratio baluns out there using the right ferrite cores e.g. types 77 or 2401. My previous remarks about the 800 ohms max could be extended using such a balun.

No the program compiles and run alright. It cannot connect. Downloaded v1.4 from STMmicro website. It has x64 or x86 drivers. Installed x86 win 7 version? and now working!? Take note guys.Sent from

I suspect the issue is the one dll (dynamic library link) present. The windows compiler does give you the option at compilation to select 32/64 or BOTH. Get the original code and re compile for 32.

Correct? Alan. I have home brewed several vnas by now, everyone is a lesson. And we get a better instrument each time.?On another note, I couldn't? get my nano to run on an old pc 32 bits with Win

A proper calibration kit has values for C0, C1, C2,C3 and an offset delay. My company produces such kits. However, the NanoVNA firmware assumes ideal standards with no offset lengths, and no fringing

I was referring to the C0 contents when the nanoVNA was shipped. I think the standard SOLT units are about as close to ideal as manufacturing constraints and cost constraints make possible, and that

By C0 do you mean channel zero default cal that came with the unit? Or are you referring to the description of the standards? It is my understanding that the firmware assumes that the standards are

If the factory set C0 values were made with a better SOLT than provided with the nanoVNA, can these values be stored? Or would recalibration with the supplied SOLT be as accurate as those set by the

That is an item I am in the process of doing. Keep in mind the method of measurement of components will influence their accuracy. There is shunt mode, series shunt mode and series mode only. Depending

Hey guys, take it easy.... I was simply putting forth a very basic question. No more complicated than asking a ham... amateur radio op.... What's the sensitivity of that voltmeter your using to

Has anyone measured some high resistive and inductive/capacitative loads and compared the resultant reported impedance with the results of the same loads on a known more accurate VNA? This would be

I see photos of nanoVNAs with copper shielding around the SA612's, and some with no shielding. Can anyone report of the difference in performance of these two variants, (probably in their noise

Accuracy is not an? unimportant issue for a toy like this as it's a good platform to start experiments.? The more serious issue I raise is about the range of the instrument. With a resistive bridge

If this VNA can perform the functions of an antenna analyzer (scan of SWR) then it will be a good deal for me.? At $55, it's cheaper than a much less versatile POS instrument from MFJ.

I guess as an intellectual exercise it might be fun to know the accuracy as compared to a Keysight PNA-X series but practically speaking, if you are looking for that kind of accuracy from a credit

Thank you Tuck. A fundamental question that needs further investigation is the accuracy of the VNA instrument. This has not been addressed nor have I seen a specification in the document. The basic

Yes, that does work. But I figured out this was broken SHORT calibration connector supplied contributing to wrong calibration data stored. After making a replacement from cable to test this idea I

Some WWW resources: http://ormpoa.altervista.org/nVhelp.htm#DSP

Thanks Alan, Gary and Larry, This document is very useful indeed, good writeup. It might be useful to include a table of RLB vs dB, VSWR and R+jX. The range of the instrument one expects should be