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SeeSii Nanovna-H Vector Network Analyzer is developed by Hugen, With latest 3.6 version,10KHz-1.5GHz measure range,2.8 inch LCD touchscreen,mini and portable design.
Seesii Nanovna analyzer with Open, Short, Load Calibration.Calibration must be performed whenever the frequency range to be measured is changed.
If the error has been corrected correctly,the calibration status display on the screen will be CnDRSTX.n is the data number being loaded.
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For Ham Radio Lover
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For Daily Research Testing
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For Scientific Research
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For Teaching Research
GVC
Reviewed in Canada on February 7, 2025
Replacement for older unit. Works well using a laptop. Using alone is a steep learning curve
Norman Patrick
Reviewed in the United States on February 23, 2025
The item was as described and has worked flawlessly. I would not hesitate to buy from this seller again.
Herb McNaspy
Reviewed in the United States on September 8, 2024
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.
Bryan
Reviewed in the United States on August 17, 2024
Best option per price for a antenna analyzer . Dollar for dollar. Can't go wrong .
FrankH
Reviewed in the United States on July 3, 2024
I am moving into LoRa on 915 Mhz. I needed to test some antennas to find if they would work on that frequency. This unit performed flawlessly and gave a rapid analysis of my antennas. I could connect it directly to my computer with a USB A to USB C cable. It has a nice case and a definite step up from my old NanoVNA. I would HIGHLY recommend this to any amateur radio operator
Mike
Reviewed in the United States on July 24, 2024
Love the size, ease of use and price. I have worked in the electronics field all of my life and this things is better than many more expensive units I have used.
Glenn
Reviewed in the United States on March 17, 2024
Good for the price. Works as advertized
Fenris Brükks
Reviewed in the United Kingdom on February 24, 2024
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.
Shannon
Reviewed in the United States on December 27, 2024
Definitely a learning curve but there's plenty of videos out there to learn from. Works great for checking SWR on CB antennas.
James
Reviewed in the United States on December 11, 2024
There is a learning curve to get to know this tool, but it does a lot of things very well. It makes antenna evaluation and tuning very quick & easy.
Frank
Reviewed in Canada on May 19, 2022
Easy to program lots of support on the net
sg
Reviewed in Canada on April 29, 2022
It agrees with my Rig Expert! This costs way less. Good tool for any ham.
Alan Boyd
Reviewed in Canada on May 23, 2020
While this might not take the place of a RigExpert, I think this is well worth the price especially if you haven't messed around with a VNA before and just want to get your feet wet. At the very least it's very handy for tuning antennas, for instance trimming a dipole down, and I had no difficulty connecting to it with nanoVNAsaver to use on a windows PC.I am thoroughly satisfied with the device.Note I use the test set almost exclusively while connected to a PC so I can not comment on the charge life of the built in battery.Pro:-price, for me and what I use it for it's more than worth what I paid. I'm just a hobbyist, I can't justify buying a bigger brand device but I'd happily pay double what I did for this-comes with a set of calibration standards, I can't vouch to their precision but it's a great starting point and if you don't have anything already it fills the need-painless connection to windows 10 PC, I run this with nanoVNAsaver software and aside from picking the right COM port there's no messing around, it just works as soon as you plugged it in-has a toggle switch so if you are trying to use it standalone you can work the basic functions without having to use the touch interface-quick startup, it takes literally seconds to boot up, maybe 3 seconds at most-it's tiny, if you don't consider the connectors it's the same width and height as a credit card, though much much thicker.Cons:-very small screen, can make it hard to read and also makes it difficult using the touch interface precisely. For instance it takes some practice learning where to press for each menu button-I have read and heard the calibration standards might be a bit off target. I have had no reason to complain, they satisfy the most basic needs but they might not be up to the same standards as ones you might buy separately.-Currently the software supports only 101 discrete sampling points per sweep, so if you are sweeping a large frequency range your results will be fairly coarse-very little documentation comes in the box, just a cheat sheet for the on-screen menu hierarchy, but there's plenty of turotial videos on youtube you can refer to to get started.-the tiny size and weight can make working with heavier devices under test tricky, for instance if you hook up to a big heavy HF transmission line when the stiffness of the coax can make it hard to secure the VNA from sliding off your work desk. I have been told there's a larger version, if you are expecting to use the touch interface and have bigger hands you might want to investigate such alternatives
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