SEESII Nanovna-H Vector Network Analyzer,Upgraded HW3.7 9KHz-1.5GHz MF HF VHF UHF Antenna Analyzer, Measuring S Parameters, Voltage Standing Wave Ratio,Phase,Delay,Smith Chart,Support Data Storage

Works really well. Sci fi level status. I love it! It does take some getting use to and is not as easier as the old school ones but just has so many more capailities and is very good for the entry level hams. Plus its not as nearly expensive as the other two big names. Yes... i do have others. This one is compact and portable with spot on accuracy. Only downside is the open, short, and closed calibration situation..but just make sure to save that parameter profile for the band you will be measuring and you wont need to do it again. Thank you so much i will definitely buy another one.

Incredible deal. Easy to calibrate and use. Provides a graphical depiction of SWR across an entire band - a must have for all ham radio antenna experimenters. You can now easily know your SWR and Impedance not just a specific frequency but across an band. I use an antenna switch to keep it connected simplifying the tuning of my SWR when switching bands before transmitting. Numerous you tube videos showing how to use it properly. High quality build and components. Love it!

I'm finding this very useful, and still amazed by all it can do. It's a bit of a learning curve....in fact I'm still learning all it's functions, but executes tasks very well. I found it handy for working with home brew antennas for ham radio. More functionality, and much cheaper, than a mainstream antenna analyzer!

I am a ham radio operator and I bought this to be able to sweep my antennas to guage performance. I'm a pretty technical guy. I'm an engineer for a small university and this NanoVNA is a very complicated piece of equipment and the wiki is not really that great at explaining how and what to do with it right out of the box. I finally found an online video that showed step by step how to get started. From their it started to make a little more sense. As far as the machine itself, it seems to be able to do exactly what it is advertised to do. It will also do a whole lot of things that I probably do not need it to do, but may learn about as I use it more. The ability to connect it to a bigger screen is a definite plus. You can run it from the face but those letters and numbers are tiny! Supposedly there is also a phone app, but as of the writing of this review I have not tried this yet. One big drawback I am learning about is the fact that you must re-calibrate the device any time you change frequencies to measure. Although this is not a hard process, it is a little cumbersome with tiny little sma connectors. I would also suggest some kind of carrying case. The box the device comes in is very nice, but it does not keep all the parts in their respective places and if you ever drop the box pieces are going to go everywhere. Synopsis... I think this will be a great piece of equipment for me in the long run. In the short term it has a pretty steep learning curve.

Dang it is small for old eyes. I have only used it in my 'shack' so cannot comment about outside visibility. I have a Diamond 5 band trap antenna and wanted to tweak the radials a tad. There is a menu print out in the box but nothing else. I had already downloaded a couple of how to documents. Both documents commented that there are several versions of the Nano so your screen may look slightly different, I played with it a couple of hours before connecting my antenna (remember to get the adapters if using the vhf 259 type connectors). It was intimidating at first but after running through a SWR set up a couple of times, it started to make sense. I had three bands to set up so used the same trace and changed the frequency range. You have to recalibrate when changing frequency so really not a big deal. You can save four traces. The recalibration is simple. Takes maybe two minutes but if you don't do it, a doubt your readings will be accurate. To me, it is well worth the cost.

Does more then i can! Well built and works good. To many functions that I have no clue how to use but if you know its well worth the money. Even just as a swr tester!

Great tool for tuning and so much more. There's a learning curve but don't be intimidated. Once you figure it out, it delivers as much and more info than a Rig Experty AA-35 Zoom or an MFJ 259(x). I have them as well but the Namo VNA is just more info. Smith chart is a bonus.

Zero complaints with this Nano VNA and it it functions very well. Only things worth knowing before you buy is these MUST be calibrated to a more narrow bandwidth instead of it's full range every time you switch to a different band portion you want to test, that goes for pretty much any Nano VNA available for them to be very accurate. These have a wide useable range from 0.01 MHz to 1500 MHz and like any other Nano VNA they're limited by how many data points they can spit out over a given range, think of that wide range like a huge "cake" that can only be divided into say 10 equal portions (data points). But say you want to test a 70cm/440 MHz antenna? Select a smaller area of the "cake" say from 420-450 MHz where the antenna is actually useable or an even narrower range first if you want better test results and the Nano VNA will still divide that smaller portion into 10 equal parts giving you more accurate data results. I'd also recommend getting a fine tip touch screen stylus to make navigating the menus easier, that can be a bit frustrating if you have fat fingers.

This little machine is fantastic. It does a heck of a LOT of measurements, although typically most purchasers will in all probability only use the SWR function. Pros, This doodabber does a heck of a lot. It is very comprehensive for such a dinky little package. As stated, most will be using the SWR meter function. Which it does admirably. But it also shows Smith charts, and shows a lot more that I don't yet understand fully and yet more I don't understand at all. I'm sure in time all will become clear as mud... So the colloquialism goes. Cons... Do NOT expect a manual! It comes with a list of menu functions. And if your an amateur Amateur radio enthusiast, you will likely NOT understand a single dang thing. I most certainly did not. It has a qr code to a extensive online manual which for the vast majority of the time, is well translated, but can be a little hard to follow (especially for the beginner, YouTube WILL be your friend in this). It NEEDS to be calibrated for every use. Which is a little time consuming. But worthwhile for it's utility. and you absolutely WILL NEED adapters for ANY kind of antenna plug (PL259, N type, BNC, and any other.) It is set up for SMA Type plugs. it comes with what you see which is two extensions cables, both are female to female SMA, A male/male connector and three calibration caps (OPEN, SHORT and LOAD, DO NOT LOSE THESE! they are required for calibration!) A few usb cables (C type for charging and a C to C cable). And finally a wee lil stylus and a 'guitar pick' style doodabber. These are obviously for screen interaction. Build quality: it's a sensitive lil gadget. lightweight, and a little 'plasticky'. But it's well enough made to do what it's intended to do and be robust enough. Although a degree of care should be taken when transporting it. I keep mine in it's box which has sufficed adequately thus far until I get a better option, perhaps a small pelican case. Overall: This gadget does what you will need it to do (meshtastic users, I'm looking at you!) And significantly more besides. I can certainly promise at least 75% of end user's will not utlilise its entire arsenal of tricks. It's compact and very portable. And frankly I'm a little smitten with it. One cannot help but adore a well created and executed piece of kit. especially one as delightfully complicated as this one. 10/10 will measure SWR again.

If you have a cheap NANO and are willing to go through a few hours learning curve then this is your gear. No more 300$ analyzers for me. Plenty of youtube videos how to use it.

Pequeno em tamanho, mas gigante em funcionalidade. É uma das ferramentas mais importantes para um radioamador. Chegou direitinho, sem problemas. É simplesmente incrível. Vou poder regular e montar minhas próprias antenas a partir se agora! Vale muito o investimento. Achei que a tela seria pequena demais, mas é de fácil leitura e visualização, ainda mais se conectar no computador!

I've only been using this for a couple of hours so far - and I'm very impressed! Once you've calibrated with the open, short & load plugs supplied, the accuracy is surprisingly good for an inexpensive meter. Even the calibration plugs return the same results as significantly more expensive ones. I've tried standard SWR measurements, Smith Chart for measuring inductance & capacitance and the TDR function for measuring the length of a piece of coax. The Velocity Ratio I used was a bit of a guess - but the result was within 10cm over 100m.

It agrees with my Rig Expert! This costs way less. Good tool for any ham.