NanoVNA-H4 Vector Network Analyzer Kit 10KHz-1.5GHz HF VHF UHF Antenna Analyzer Measuring S Parameters, Voltage Standing Wave Ratio, Phase, Delay, Smith Chart with 4" LCD Touch Screen Nano VNA

Very accurate for SWR analysis Easy to use. Lot of videos explaining how to set up and calibrate

Had it out and analyzing my antennas within minutes. Worked exactly as expected and am very happy with the purchase. Found out one of the handy-talkie antennas I have used for years was not nearly as good as I thought! Great little tool with a ton of features!

The Nano VNA works great., only complaint I have is the durability of the product so be careful with it and it will be fine

I bought this to verify VSWR on Amateur Radio antennas and I have to say I am impressed. It might be a bit of a learning curve for someone not familiar with Vector Network Analyzers but there is help online. The capability of this little instrument is so impressive. It is small but the display is easy to read and it seems pretty accurate. I was tuning a 6 meter antenna and it was so much easier than doing it with a transmitter and reflected power measurements. The kit come with the calibration set needed of SMA open short load devices. The only thing extra needed is some SMA to UHF or N connectors. After seeing this impressive capability, I will be looking at the spectrum analyzers also.

Mine was prone to turning itself off making it a pain to use. The Rig Expert works much better for me.

Value for money is very high for this product. It does a great job for a lot less than anything neat its capability. I have a couple of SWR meters and this is spot on. The menus and touch screen are a little quirky but I have no complaints. Highly Recommended!!

Came without calibration connectors for load

Works like it should. Menu is a little confusing at first. Plenty of YouTube videos out there on how to use it. Used it to tune multiple different antennas and not had any issues.

Excellent

I’ve been told to be cautious of the Chinese nanoVNAs, as there are a lot of low quality clones out there. This one appears genuine, and looks it should be quite durable. The NanoVNA-H4 menu system has differences from the older, smaller NanoVNA-H. It took me a bit to try to work my way around it. Like the TinySA and NanoVNA-H, except for the the single sheet of the menu tree, enclosed documentation is non-existent. When checking on line for documentation, please make certain it is for this model. There are 2 6" adapter cables RG-316, SMA-male both sides, and an SMA female to female adapter included. A pair of 12" cables would be ideal, but once you're up in the 1 GHz area, longer cables can give you grief. I have used this unit to check several antennas ranging from 3 MHz to 500 MHz, and found the unit quite accurate. Bonus is it also separates the resistive component from the reactive component, so you can see how you can correct the tuning. Sure makes tuning the antenna far easier than a simple SWR bridge. There are still many features I have not explored, so I cannot comment on that. If you don't have them, I recommend you pick up some SMA male to: N, BNC, PL259/SO239 adapters (or whatever type of connector you are using) whilst you’re at it to save some time. The price of the unit for what it can do ratio is excellent. It works like a charm. Happy to have it in my test equipment repertoire. Buy with confidence. Edit Apr 28, 2024: Nice feature on the unit is the ability to document what you're doing with screenshots that can be stored on a micro-SD card. The images are 320p x 480p BMP files, occupying ~308k each. This is great for documenting "on the fly". I'm using an old 2GB card, so I can put >6000 screenshots on the card. There is software you can download to interface your computer (and possibly more samples), but this is more cumbersome. Still happy with the unit!

It arrived, I tested it, and returned it in the same day sadly I had too pay the return shipping

I like how many things you can measure with this. Lots of youtube videos explaining how use it. I recommend this the only thing I would like to see in future versions is that when you power the device up it defaults to the last configuration of traces and frequencies that you finished with rather than to the 50 kHz to 900MHz.

I had been told to beware of the Chinese nanoVNAs because there are a lot of low quality products out there. This unit is very well made and works like a charm, buy with confidence.