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If you want ESD protection on your VNA or tinySA refer to this group's thread. I ordered these ESD protection diodes and installed them in my two tinySAs and my nanoVNA. They work perfect.

You may find it helpful to read "The absolute beginner's guide" which can be found in the files section of this group. It has very good basic information and details on firmware update procedures.

Hi Rob, DiSlord supports the NanoVNA-H (and other devices) actively: https://github.com/DiSlord/NanoVNA-D/releases/latest Martin

Not *any* - for a given length, you get a circle/spiral on the Smith chart of values Impedance transformations If a load of complex impedance Zload is connected to the end of a transmission line of

Can anyone tell me the latest version of firmware and link please. Totally confused so far. Thanks

Yes keeping in mind the termination need to be a short or open. Then as a function of length and frequency any +/- imaginary value (C or L) can be presented at the other end. Lester B Veenstra K1YCM

Lester, Sorry to scope creep on the thread but this is interesting. so you are saying that a parallel tuning stub could be open or shorted and depending on the length to termination, could be seen by

Yes, you can make inductance or capacitance with a shorted or open stub, with some limitations.

Both will work, of course, different lengths at a given frequency for the same inductance or capacitance at the user's end Lester B Veenstra K1YCM M?YCM W8YCM 6Y6Y lester@... 452 Stable Ln

Both articles well done. Thanks. I have had some good success matching antenna impedance using the smith chart but using a chunk of coax for a shunt inductor eludes me. Could that possibly be the

I can envision the potential for lots of coupling due to either magnetic field or capacitive coupling at nasty power line harmonics which can extend out quite far in frequency.

Many thanks to everyone for replies. Im still playing about with the device, and very impressed. Just wish i could could Mr J Smiths software to work, although i believe hes stopped development and

Are you certain that you are actually downloading to the NanoVNA, and not possibly uploading the old from it, and overwriting your image? If you errantly did that even once, subsequent correct

Hello, I have a nanovna H4 I downloaded the firmware and installing it with the Dfuse program, all very well, but the firmware in the H4 not change, it remains the same, any suggestion? Thank you

The WTCP irons are not cheap irons. I have three of them at work. I can verify that the tips are grounded. I have a cheapie Weller 25 watt iron that I added a solder lug and a wire with an alligator

Eric, You need the Device manager to show that you have a DFU device installed. Using the Device Manager (DM), and with the nano connected, delete any STM bootloader device(s) shown. Then, use Zadig

Let me know how you go, I am also interested to do that.

This thread may be helpful: /g/nanovna-users/topic/80361897#20422 Reinier

Working on 900 MHz patch antennas (copper foil for tuning and matching) with about 1 or 2 meter of coax to the (original) SAA-V2, I had 3 broken units (1 from my customer). All revived by replacing

Yes, and I have seem the ground pin cut off, and I have seen miss wired wall sockets. Just letting people know that simple/cheap soldering Irons can kill digital electronics.? Kent