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Hi all, There are several similar Nanovna clones on the market. I would like to know what I have (or what perhaps not). How do I read out my NanoVNA's firmware version? Is there perhaps a list with

Can you publish or send me your "experimental" firmware? I would like to run some tests on it.

Hi Nick, thanks for the suggestions! Currently, I have no plans to separate the plots from the main window, as I see them as a main feature of the application, and want them there. The code doesn't

The dummy guide to buying a nanoVNA: This is the shop of the person that started all this and he delivers good product in excellent packaging.

There are so many nanovna versions out there and the price varies quite a bit.To get the "best bang for the buck" what should I consider? 1- input shielding2- Calibration loads3- battery4- short m-m

Hello, We just uploaded the current version: https://www.op4.eu/code/derdei20190921.7z Sincerely, yin&pez@arg

Forth is a niche language created for writing embedded software on very limited, bare HW. In particular, it is intended to allow you to write and test peripheral control software interactively. The

I tested different SMA connectors with hand connection with no wrench and don't find any noticeable difference. Probably because NanoVNA works with less than 1 GHz. Does somebody have any confirmation

Yes, limiter diode will ruin measurement. There are two issues with diode: - it add parasitic reactance - it add non-linear distortions of the signal There is no simple way to protect RF device with

For antenna gain measurement you're needs to place receive antenna at least half wavelength away from transmitting antenna. Otherwise your measurement will be affected by near field of antennas.

[email protected]> wrote: The output level of a source is not an indication of the damage threshold. My HP 8720D can output 10 dBm, but the damage threshold on the test ports is I believe 30

I found some finger "wrenches" here: https://news.thomasnet.com/fullstory/sma-connector-wrench-facilitates-cable-assemblies-20012787 and a torque limiting "wrench" here:

I will have to look for it, but a description of the method used by HP was posted on the Keysight forum by Dr. Joel Dunsmore. I recall him saying it is very memory efficient as it does not require one

I've laser-cut some from 3mm acrylic sheet. Black for 0 ohms, green for 50, clear for open. John

Hi Jim, If you could send me the calibration file, I'll have a look at it. Mihtjel@... Thanks for taking the time to report the issue! -- Rune / 5Q5R

Hello Reg, you can also print them by your own 3D printer. See https://www.thingiverse.com/thing:3618280 I printed them with PLA in 102% size to fit tight. 73, Rudi DL5Fa

ok, 8M crystal is normally not a problem for me, but for most nanovna owners F303 is then not real 1:1 replacement. We should probably, if we need more memory, stick on crystal-less USB STM32 (AN4879)

Bryan, The lab I worked at had spectrum analyzers and receivers that cost more than my first house. To protect the equipment our laboratory manager purchased a set of HP 11867A limiters ( I'm guessing

Yeah, Reg - Python is the future....! Actually, Python is close to becoming the #1 programming language - educators, engineers and scientists have all created extensions. Talk to forum member Rune

Folks, Thanks for all the comments. I notice that the diagram provided by erik does not indicate any protection. Thanks for that diagram. The 50 ohm bridge mentioned above does provide some help but