[Upgraded] AURSINC NanoVNA-H Vector Network Analyzer 9KHz -1.5GHz Latest HW V3.7 HF VHF UHF Antenna Analyzer, Measuring S Parameters, SWR, Phase, Delay, Smith Chart

I use it for my hobby to make/tune HF/VHF/UHF antennas, HF baluns, ununs to measure SWR (it's nice to see a graph for entire band), insertion loss, reactance, Smith Chart and there is more parameters I didn't try/don't know about yet. But there are lots of good videos on youtube about how to use nanoVNA. Of course there are better much more expensive options for antenna tuning, but I'm on budget and it's excellent tool for the price. This unit does has some limitations: - microSD Card is a nice feature to save screenshots/data files, but I had problems with that. I returned first device because of 'Fail write' error (I tried different 16GB/32GB/128GB cards with no luck). I reordered nanoVNA again, and got the same error. But it looks like there is a solution I found in nanoVNA groups.io. This device does not support newer SD cards. So I found an older slow 16GB SD card, formatted in FAT32 on Windows, inserted SD card in device powered off, powered on device and it looks like it started to work with SD card. I tried the same card before and it didn't work. Not sure maybe it's because originally I inserted the card with device powered on or it had some format issues, but now it finally started to work. To be on safe side I would power off nanoVNA before inserting/ejecting the card. - Only 100 points of measure, so if I set entire 3.5-30MHz band device has a step about 250kHz that is not enough to tune multiband antenna to exact frequency on each ham band. Also device must be re-calibrated for each new band range that is not very convenient. However a good thing that several bands can be saved as a preset, so it's manageable. - Small TFT screen is okay for me, however it's hard to read data in a sunny day, so not the best option for outside. Also sometimes graph covers text, so text is unreadable. - Questionable reliability. It's packaged well and has nice cables, but it's not built like a tank. It's more for indoor use. If I had unlimited budget for my hobby I would get RigExpert for outside use or considered more expensive nanoVNA model with 400 points of measurement and probably bigger screen. But, for the price this model is a way to go for me. It does work and helps me a lot. Overall excellent value.

Should have bought this a long time ago. I recently purchased a cheaper version of this without the case. For a few bucks more. I suggest you buy this one with the case and the ability to take a microSD card. Item came well packaged and it works straight out of the box. There are a numerous tutorials on YouTube on how to calibrate the meter. I suggest you watch them as it is pretty easy to do and take a a few minutes to do. This is just another tool to add to the ham box. It also a very useful tool to test out antenna to show you what band is the antenna is cut for and the SWR you're getting back to the radio. Don't solely rely on this. But it's a great tool to give you a baseline where the antenna "sweet spot" its at. I tested several HT antenna you can clearly see where the band or bands the antenna is at. Great and awesome tool for ham operators. Very well made and happy with the purchase.

I didn’t want to spend hundreds of dollars for an antenna analyzer that I might use a few times in my entire life. This was inexpensive and it works fine. It seems like it would be very complicated and difficult to use, but there are lots of videos on YouTube that show how to use it, and if you just follow the steps, it works fine and is not difficult at all.

The less ideal: Virtually no instructions unless you do some searching online, in which case they're easy to find. Included USBC cables are so tight I decided not to use them. Cables I already had were perfect fits (how do you mess up a USBC connector?) And though it claims to have an android app, the app is outdated and doesn't work with newer android versions. Ok, now we've gotten that out of the way. Now for the good parts: Easy to interface with computer, great features, not expensive, does things that you used to have to pay a lot more for a few years ago, hundreds more. I was able to easily see my antenna's behavior over the frequency ranges I need to use it for. It made tuning the antenna simple. It also made it easy to observe the cutoff points of my diplexer. It's just so useful and amazing to use. I'm really happy with the purchase.

Interesting box.. it does a lot. I really like it and seems like it is a good unit. I have not had time to do as much with it as I like, but it has done what I wanted to do. I use this with my Amateur Radios. the size of this, you can even carry it to the top of a tower and use it, or any remote location.

This is the first device I have owned like this. As a ham hobbyist, I was used to a standard analog SWR meter. I could tune an antenna to get decent results. I did not know what I did not know. Wow! Having the extra capabilities and ability to analyze antenna efficiency across a frequency band is incredibly helpful. This specific device is very serviceable. After reviewing a couple YouTube videos on setup and calibration of the device, I was up and running. This unit is the older version format with SMA connectors (newer / more expensive version uses PL239 connections). The package included the device, 2 SMA male/male cables, calibration connectors (open, short, load), a stylus and a wrist strap with guitar pick-like stylus. There is also a usb-c to usb-c jumper cable to connect the device to a smart phone. The device powers up quickly. Once you get frequency ranges set and calibrated you can store them in 1 of 5 memory slots. A few more would be nice but 5 is very serviceable for my needs. The touchscreen is the resistive type (think old PalmPilot). That is why the guitar pick stylus is a nice touch. It can be a bit finiky and sometimes you have to tap twice or you may hit a soft button you don't intend to. Patience and remembering the feel of the older PDA days is helpful. So far, I haven't gone into settings that messed things up or couldn't be backed out of easily. I can't provide feedback on the precision of the device as I do not have anything to compare it to. However, results do speak for themselves. I have been able to diagnose some antenna and feedline issues on several setups and get them resolved. Much improved function of my antenna systems. Battery doesn't last as long as I had expected. About an hour of continuous use (best guess - I haven't done a full battery function test). Not an issue though as the device works while plugged in for charging. There are several options for the type of graphic display of the signal results. I mostly use the SWR but am learning the Smith Chart and like it very much. More fidelity of information. I have had no issues with the product so I haven't needed to contact customer support. Product is functional and more finished than earlier versions of the NanoVNAs I have seen online. Overall, I highly recommend this product. The range of functions are far more than my ability to use. For the price point, you can't go wrong.

I have read a little on these devices over the past few months, and decided that for ham radio use, if they worked as well as people seemed to think, the small size, internal battery etc. would make it ideal for field antenna work. I really wasn't expecting that much at this price. However, it arrived in a nice looking box with fitted internal compartments for cables, connectors etc. My first quick play with it impressed me. I was suspicious about using a square-wave and using harmonics for the higher ranges, but if you forgive the reduced measurement range, that actually works pretty well. Not as well as my bench VNA, but that cost just a tiny bit more. The biggest potential problem is the number of sample points. Being fixed at 101 points is rather limiting for wide-band scans. That said, its not that usual outside of microwave use that wide bandwidth scans are used/useful. If you really need that, there is software available (free) for Windows and Mac to control the nanoVNA, and with the ability to split the range into some number (you decide - how long you want to wait) of segments, and scan each segment individually, merging the results into a single view. If I had to find fault, it would pretty much be with the external components: * A guitar pick is better than a finger on that little screen, but a stylus would be better. * There is only one 50ohm load, the proper calibration procedure requires two, although you *can* use just one. * The open and short calibration loads are identical once connected or an adapter fitted. Marking these 'O' and 'S' would be useful. * The box is too nice to toss away, but lacks space for additional adapters/connectors. All that said, I highly recommend this for anyone wanting a VNA for sub-microwave use and not requiring ultar-precision. If you have never used this sort of equipment before there is a somewhat steep learning curve, and most documentation is either at too high a level for a lot of people, and assuming lots of basic knowledge, or really too low level and created by people that are maybe not really grasping what they are doing. I expect that problem to resolve fairly quickly. As an antenna analyzer for ham radio use it blows most of those costing 10 or more times as much out of the water, and is useful for other things too (like tuning filters etc.).

I have only been in to ham radio for a short time but I have had cb radios since my teenage years. This little device is a game changer for people like me on a very limited budget but that want to be in the hobby of radios. This allows me to analyze my antennas before I even put them up on the pole so that I can more quickly tune and mount them. Normal antenna analyzers cost many times more than this does, but this has many features of the more expensive units. This one takes some learning but I found that it was way easier than I was lead to believe from reviews. I had watched videos of people using it before but really didn't pay attention to the menu choices they used because I figured it would probably be different than the firmware I would receive when I got one. I used it for the first time today after watching a 5 minute video and playing with the device and exploring the menu system. Between the few videos I had seen over the last few months and the 1 video today I was able to calibrate the device and analyze the swr of a mobile cb antenna I had within just a few minutes. I actually had fun seeing the graph change as I touched the antenna and vibrated the spring it was on. I haven't checked into upgrading firmware or anything yet other than formatting a micro sd card for it and making sure it worked with the nanovna. I was able to use a 128gb sd card I had that was extra by using a windows app that let me format it to FAT32. Worked like a charm. I'm not sure why I didn't pick up one of these earlier for how useful it is but I would definitely recommend one if you are into Ham radio or cb.