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WB2UAQ, Between the HP8721 directional coupler and HP 85032 calibration standard you've got some pretty expensive toys there. The NanoVNA must feel outclassed when used with them :) Herb

Hi Alan Yes the type J pots are good. Years ago I built a K2BT noise bridge and also a Wilford Caron bridge. The pot called out for one side of the bridge was a 250 ohm type J linear pot. I still have

$ python3.7 -m pip install --upgrade --force-reinstall numpy That solved the problem. NanoVNASaver now runs on my Mint workstation.

https://www.st.com/en/development-tools/stsw-stm32080.html /g/nanovna-users/search?q=windows+7+usb From Nigel ZS6RN: "I have updated with the newer version based on the file name

Oristo, I forgot to mention that I use the NanoVna to measure return loss with good dynamic range. First I tested the S21 performance of the NanoVna with an HP 355D and found that I could measure the

Yes, slow devices >>on the same hub<< can impact thruput of faster devices. USB is, after all, "Universal Serial Bus". so faster devices must toe-tap while slow ones (e.g. HID keyboards and mice)

Thanks for the explanation! I haven't tried this yet but will do what the manuals for the old Gen Rad bridges suggest. They suggest "shunting down" the unknown and out of range impedance with a

Hi, I'm looking for drivers for windows 7 nanovna usb port. thanks Gaetano

Hi Herb - I understood that. Exactly, but (lacking another impedance bridge) I would like to know how far off is nanoVNA measurement using >>MY<< "Mickey Mouse calibration"

They are mixed down for the analog-to-digital converter (ADC), which arguably makes DSP harder, since it has to sort opposite side band suppression. Here is a collection of articles that I find

Oristo, My reading of Alan's post is that he performed a normal OSL calibration at port 0. After that he connected his shorted clips to port 0 and noted the difference between the OSL short and the

Hi Alan - I would be very interested to know what value is reported by nanoVNA for that inductor @ 3 MHz after "Mickey Mouse calibration" by short, open and ~ 50 Ohm resister in alligator clips.

Herb, the "cutoff frequency" is the -3 dB point. I should make that more clear, I suppose :-) -- Rune / 5Q5R

Rune, The international definition of bandwidth is actually the -3 dB points. That is what most manufacturers mean in their literature unless specified otherwise. The -6 dB and -60 dB points are more

Hi Bryan, I just confirmed by installing 0.2.2 on my NanoVNA that it does indeed have problems interfacing to my application. I have asked edy555 about it on Twitter, and for my own testing purposes,

it on the Smith Chart? I produce all my plots for VNA cal kits usin gnuplot, as one can automate everything, reducing the risk of errors. But I have never plotted it on a Smith Chart - only amplitude

Test certificates, flow charts, not more than 30% charged, 27 pages in length. Irrespective of what air regulations state, a lot of couriers have much more restrictive practices. I wanted to get a

Here is a Smith Chart that need only be printed: http://ormpoa.altervista.org/SmithChart.gif It is generated using gnuplot, my favorite data plotting package: http://www.gnuplot.info/

Same here, but i stil i no negative Feedback for the seller. Strange.

Indeed. Downmixing retains phase difference