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Neat antenna response with the double frequency match. They did a nice job. Would be interesting to see how the radiation efficiency holds up. Alan

20 : Measurements with Core Uncertainty Hello, Allow us, please, to inform you that in the course of preparation for the final comparison between VNA and NanoVNA, which we planned to base it on

Testing a U/V Baofeng HT antenna with my modified nanoVNA software.

Last edy555 firmware DFU. 27-09-2019.

Larry, I deleted the un-edited user guide I uploaded in favor of your version. We appreciate the effort you spent cleaning the user guide up. Props to ch045 for authoring the original guide. Herb

Hi Rune Measuring phase is much used by me. It you e.g. want to measure using the port extension (in ps) to the end of an adaptor to which you solder leaded components then you check the S11 phase

Paul, I uploaded a manual in the files section that has the answer to that. It is authored by cho45. My version has live links. Hope this helps

Solving d = a*exp(j*2*pi*f*t) with 256 measurements will give better accuracy than the 32k point FFT with far less computation. The sole limitation to the accuracy from computing a linear fit to the

No such thing as bugs... they're all undocumented features.?

Hello Rune, I have just uploaded V0.0.12, and it works superbly on my Win10 64Bit machine! I did have it shut down inexplicably shortly after I had first started the program, however I powered down

I'm talking about polyethylene dielectric cable. It has velocity coefficient of 0.659. Its temperature coefficient is negligible. If you cant identify polyethylene in the cable you are purchasing,

No, it depends on environment temperature and used frequency. Also, different cables uses different dielectric and VF may be significantly different. For example: - PE: solid polyethylene, VF=0.659 -

qrp.ddc, Thanks for taking the time to reply. Ham's such as myself are generally looking to purchase specific types of 50 ohm cable such as RG-58, RG-223, RG-6 etc. The cables are all marked by the

Where can I find the later, bug free firmware? Paul

Probably this is the reason why NanoVNA shipped within plastic box. When I buy Li-Ion batteries on aliexpress, they are also shipped in plastic box. It seems that shipping Li-Ion battery requires

Respectfully Dr’s Yin and Pez; Perhaps much of the frustration you must share with Dr. Kirby and myself, and perhaps a few others who might be following for want of discovery of what these exchanges

Hmm. I think polyethylene dielectric coax has a pretty reliable velocity factor of 0. 66. So identify the dielectric before applying the vna to measure its length? A

Thanks!?? Mike WY6K "... somewhere in the distance, there's a tower and a light, broadcastin' the resistance, through the rain and through the night..."

Mike, The do indeed increase the dynamic range somewhat. The dynamic range at 600 MHz and above is rated at 40 dB and all of the units I tested , even the worst ones, met this spec. I have no uses for

Unfortunately I don't have access to better equipment. The only VNA that I have is NanoVNA and EU1KY single port VNA. Such cipher 25 "meters" or 24.5 "meters" is completely useless, because you're