Nanovna Update
Ceola Roefaro
V2 Plus4 is the latest design which fixes the drift and linearity issues with older versions. It uses our new VNA-R architecture featuring temperature drift cancellation and reduced crosstalk, showing no visible drift in all indoor conditions. Compared to other NanoVNA versions, V2 Plus4/Plus4 Pro do not use harmonics for measurements, improving performance significantly, achieving 90% less trace noise, and is the only low cost VNA to give you highly repeatable and reliable measurements comparable to professional instruments. The wide frequency range covers common cellular, Wi-Fi, and IoT bands, as well as HF, VHF, and UHF amateur radio bands.
Beware that nanovna .com is not owned by the original developers of either V1 or V2 NanoVNAs, and is being used to mislead users into buying clones from one clone manufacturer. These clones are not supported by any updates from the developers, and violate the license conditions of our V2.2 design.
Several users have tested clones of the NanoVNA V2 design. We also checked out a few clones ourselves. The clones are based on earlier designs intended for either 1GHz or 3GHz, and some have tried to extend the frequency range using harmonics without understanding the design. Furthermore, none of the clone sellers seem to understand the role of the high frequency components and have substituted generic parts, which worsened the trace noise noticeably.
Some NanoVNA clones use harmonics to exaggerate the frequency range, which gives wrong measurements because the strong fundamental signal at the receiver creates interference at the harmonic frequency, giving a stable but incorrect measurement. These clones usually come in a plastic enclosure to save cost.
All clones are based on the older V2.2 design, which if replicated well can only reach 60dB dynamic range @ 3GHz. Any clones advertising higher performance are exaggerating the specifications and likely perform worse.
Note: Zeenko is not an authorized seller of S-A-A-2/NanoVNA V2 based products, and is using our design without permission after being asked not to several times by the original developers, while also violating the license on our original V2.2 design. These clones exaggerate specifications by pushing components beyond datasheet limits. Please be aware that buying these clones do not support the original developers, and there will be no support or updates for these hardware versions. Please note that V2/S-A-A-2 is an entirely original from scratch design by HCXQS/NanoRFE (formerly OwOComm), and Zeenko had zero involvement in its development. We also did not use any part of the hardware design from edy555's VNA (V1 version). Thank you for your understanding.
To get an idea of what kind of measurement noise is achievable, here are some sample measurements we made of a cascaded SAW filter and a power amplifier using a NanoVNA V2 Plus4 (click the images to view them at full size):
Note: NanoVNA V2 Plus4 Pro now allows measuring crystals by an adjustable bandwidth setting. All other hardware versions can not measure crystals because of the rapid switching of the test signal.
The NanoVNA V2 design is licensed under CC-BY-NC-SA and commercial use without specific permission is forbidden. You need to obtain specific written permission every 3 months to sell hardware using this design.
If a VNA is that simple, you might be asking why commercial ones are so expensive then, but the answer lies in the rather limited capabilities of the NanoVNA. It has a fundamental frequency range of 300 MHz, it uses an audio ADC, and its RF components are not of a particularly high spec. Compared with a commercial model that will have a frequency range in the GHz, a much higher specification ADC, a much lower noise figure, and a hugely more capable computing system to drive it, it becomes rapidly obvious where the extra cash goes before you have even considered matters such as calibration.
i have the same nanovna ,that it is the one i can say that they miss the CH 0 on it ,i have trouble seeing it firmware ,could it be a clone ,or it is real ,it is the same ,and o the pcb nothing written ,but it is well shieded .My question how do i know it firmware ,and how to update it .thanks .
edy555 design was an improwment from a previous design by a German radio amateur (forgot his call sign).
In turn a Chinese designer improved upon it and created the next revision that sparked a multitude of variants.
The newest variant (completely new hardware design) that goes to 3GHz and rivals older commercial equipment is S-A-A (NanoVNA 2.0).
yeah, and OwO is a bit of a clown. You can open-source something, and you can sell it yourself, but you have no right to complain when someone else sells the same product (which you open-sourced) for less and puts you out of business.
I feel your pain. Not specifically about the VNA stuff, but about having to make/build the package in order to make/build some other package in order to be able to install the thing that you actually need.
Scroll down to Step 3 for a reference to the procedure or you can find the blogger where I have a recently updated comment noting a better method for installing with windows.
-procedure-for-installation-of.html
Readily available today in many forms: signal analyzers, real-time signal/spectrum analyzers and even mixed domain oscilloscopes all give you the ability to look at spectrums vs time as well as RF amplitude, frequency deviation and phase deviation vs time.
If I am looking at the right trace the Bafong whip antenna is surprisingly close to right. Perhaps add a wee tad of inductance and I think you would be hard pressed to do better. On the other hand, I may be reading the traces wrong and it could be awful. I thouht I saw it at 48 ohms and a couple nf. Or am I wrong? In nay case these look like fun toys to play with.
Hello ,i have a problem ,i have the same nanovna ,that they missed on it the CH0 ,and this is the only on e i see on the net.Could it be a clone or real one.ON the pcb there is nothing written ,only a good screening and shielding .My question o need to know what firmware is inside ,it came with no batt ,i have searched everywhee to know what firmware version is it in .And how and what i need to update it
thanks for help .