NanoVNA-H4 Vector Network Analyzer

I purchased the AURSINC Upgraded NanoVNA-H4 (Latest V4.4) to test some antennas I was building, including EFHW, linked EFHW, and dipole designs. I’m very happy with this product. It’s accurate, easy to use, and the 4" touch screen makes navigating measurements a breeze. *Note* I did go back and forth with buying the smaller screen version or even the next version up, but the VNA-H4 screen size is nicer than the small and I really don't need the features of the next version up or the added cost. Having also used AURSINC’s TinySA Ultra, I can confidently say that AURSINC and SEESII are the only vendors I trust on Amazon for this kind of precision test equipment. The NanoVNA-H4 worked great for measuring SWR, S-parameters, phase, delay, and Smith charts on my antennas. It helped me verify and optimize my antenna setups with my Yaesu FT-891 radio. Overall, I’m very satisfied and would definitely buy more products from this vendor in the future. 📐 Key Features: Frequency range: 9 kHz – 1.5 GHz (HF, VHF, UHF) 4" color touch screen for intuitive control Measures S-parameters, SWR, phase, delay, and Smith charts Compact, portable, and reliable for field or bench use Ideal for ham radio antenna testing and tuning ⚠️ Disclaimer: This review reflects my personal experience and is provided for informational purposes only. I am not liable for how others use this product or interpret this review. Always follow manufacturer guidelines and safety practices when using electronic test equipment.

I am very happy with this after having used it extensively for the last couple of weeks. A perk of my profession is that I get to use really expensive and capable test equipment at work but I wanted some of that capability for my hobby projects. That said I went into this purchase not expecting professional quality gear. My expectation was for hobby equipment and I feel like this product fulfills that expectation quite well. There is plenty out on the web regarding what this does and does not do, so I won't rehash that here. I will say that there are many firmware available for this and some do different things, or do some of the same things differently. In any case, you will likely want to update the firmware on this or try one of the others. It is quite easy to do. This particular unit came in a plastic case with a couple of cables, an SMA F to F barrel, and the terminations for calibration. A USB cable is also included along with a nice stylus, something that is absolutely a must for the operation of the touchscreen. Everything you need to get started is here except documentation. That's reasonable because any documentation will be specific to firmware and firmware changes often. So you'll get that yourself electronically and you'll likely want to watch some videos as well to get up to speed on the operation of it. The included plastic case might be ok for some, but I recommend you put this into some more robust storage when not in use. At this price what you are getting is somewhat delicate and exposed. That's fine for a reasonably clean bench. I've even used it with care in the field. Just know that this isn't something you're going to casually throw in the tool bag, you're going to want to protect this. So far I have enjoyed using this for a number of tasks including: sweep antennas, tune filters, tune antenna traps, measure inductors, measure capacitors, and so much experimentation with tuned circuits. Not only has it increased my productivity on my hobby bench, it's really helped me to learn some concepts and reinforce others. What a pleasure to be able to do that without worry because if I harm this thing in the process that's a whole lot different than playing around with my professional test equipment at work that costs tens of thousands of dollars. In conclusion, this is a nice inexpensive bit of kit that produces reasonable results for the hobbyist. I am quite pleased with it.

Great little tool. Helped me troubleshoot issues I had with a mobile setup and get my SWR down to 1.4. Price is great compared to other VNAs, build quality is decent, only downside is the documentation it comes with is pretty lacking and has to rely on YouTube videos

So I had the smaller version of this - the H model without any case and after a few years it failed, so I went with the SAA-2N, but found it not as accurate and it was not upgradable by me. This is the H4 and although the print on the case is barely readable, it appears to work fine and appears to be close in accuracy to my 2 HF Antenna analyzers (MFJ 269 and RigExpert AA55). The software is updated to the latest version and works great with VNA Saver. It comes in plastic case (not metal as implied in the description). I assume the metal the description is referring to is on the board around the RF section as this case is all ABS plastic. No matter, it still seems to do what I need it to do. I am still learning to use this, but one takeaway from my previous device is make sure you discharge any outside antenna before you connect it to your device as I suspect that is what happened to my first unit - probably had static on the antenna that damaged the input of S11. The screen is easy to read and the device is fast! much faster than the SAA-2N and the H device. Haven't tested the battery operating time yet, as the longest time on battery so far has been an hour. This device is feature rich compared to the H device, so for 45 or so more dollars, a good value.

I saw this in a YouTube video when I was studying for my Extra Class Licence and for the price I though I'd give it a try. Once you figure out how to use it, the NanoVNA will give you very precise measurement on your antennas, baluns and UNUNs. I used it to work the bugs out of the 49:1 UNUN I built for my 80m EFHW antenna. It has much more range than my MFJ-255C, antenna analyzer for 25% the price. (NanoVNA covers all bands from 2200m up to 23cm) It can can plot out the entire frequency range of an antenna or just look at one band at a time. The software for the PC is easy to use and gives you a bigger graphical view of what is going on. It saves the results or a screen shot to an mico SD card. Now looking at the spectrum analyzer for future addition to my shack.

Acaba de llegar. Aún no se bien como usarlo pero ya ví cuáles antenas si funcionan y cuáles no. Se requiere capacitación para entender los resultados pero es de mucha utilidad si vas a diseñar y contruir antenas de radio.

Using it to test antennas for use with Meshtastic, works great. So nice to know what's actually going on. Manufacturer didn't remove the screen protector before putting on the cover. Screen is still easy to read, so this isn't really a negative. Taking the cover off and peeling it also should be easy if I want to do that.

They are nice for testing, I love the price at $40+ CAD but they don't include adapters for bigger cables, not that important but many people use this for radio antenna and ham coax cable testing. The other big thing is there is no case all components are exposed to the elements that makes it for indoor use only. There are many tutorials online but they do not give factory settings so if you change things before you know what you are doing you have to spend a considerable amount of time figuring what these settings were... Anyway all in all a good value for the money, can't wait to use for DIY antenna's to see how precise it is... 73.

incompleto.

J'utilise ce produit pour la calibration de mes antennes, Ce que je n'aime pas du produit, il n'est pas dans un boitier fermé. Ce qui peu laisser entrer les poussières. etc. L'image est trompeuse car il n'est nullement mentionné que ce produit n'est pas dans un boitier.