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Upgraded NanoVNA-H4 Vector Network Analyzer, SeeSii Latest V4.3 10KHz-1.5GHz HF VHF UHF 4" Touch Screen Antenna Analyzer Measuring S Parameters, Voltage Standing Wave Ratio, Phase, Delay, Smith Chart

4.6 out of 5 stars 746 ratings
£90.46
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Size Name: 4 Inch
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Purchase options and add-ons

Antenna Radio
Brand Seesii
Colour Black
UPC 889251537400
Manufacturer Seesii

About this item

  • 😊【2022 UPGRADED NANOVNA ANALYZER】: SeeSii Nanovna-h4 Vector Network Analyzer is developed by Hugen. With latest 4.3 version,10KHz-1.5GHz measure range,4.0 inch LCD touchscreen,mini and portable design.This Antenna Analyzer is provides outstanding vector network measurement capabilities and perfect for evaluating antenna resonance and SWR.It is a very handy & smart analyzer for electronics engineer, amateur radio operators or radio diy amateurs.
  • 😊【BUILT-IN MICRO-SD PORT & TIME DISPLAY】: The lastest antenna analyzer with MicroSD card port,so you can save field test data or screens to a MicroSD card at any time,support up to 32GB memory card. (Not include in the pacakge).In addition, different from old version NanoVNAs, the date and time can be customized, which is convenient for you to further record and save data..The default firmware main function is used for antenna performance measurement.
  • 😊【IMPROVED FREQUENCY ALGORITHM】:The Vector Network Analyzer can use the old harmonic extension of si5351 to support the measurement frequency up to 1.5GHz. The 50K-300MHz frequency range of the si5351 direct output provides better than 70dB dynamic, The extended 300M-900MHz band provides better than 60dB of dynamics, and the 900M-1.5GHz band is better than 40dB of dynamics.Great for trouble shooting antennas and improving performance.
  • 😊【PC CONNECTION & TX/RX FUNCTION】:The vna analyzer uses PC software NanoVNASaver, it can connect to a NanoVNA and extracts the data for display on a computer for saving to Touchstone files. We can export Touchstone (snp) files for various radio design and simulation software through PC software.In addition,the default firmware is mainly used for antenna performance measurement. The TX/RX method can measure the complete S11/S21 parameters (need to manually replace the transceiver port wiring).
  • 🎁【Abundant Accessories】:Equipped with 1x NanoVNA-H4(with 1950mA-h battery), 1x USB Type-C cable, 2 x 15cm SMA male to male RG316 RF cable, 1x SMA male calibration kit - OPEN,1x SMA male calibration kit - SHORT ,1 x SMA male calibration kit - LOAD,1 x Touchscreen pen.It's very useful as an antenna analyzer for your ham station, easy to set without fancy calibration.The firmware of the nanovna-h4 can be updated by the user. New versions of the firmware needed pls contact us for download link.
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Upgraded NanoVNA-H4 Vector Network Analyzer, SeeSii Latest V4.3 10KHz-1.5GHz HF VHF UHF 4" Touch Screen Antenna Analyzer Meas
This item: Upgraded NanoVNA-H4 Vector Network Analyzer, SeeSii Latest V4.3 10KHz-1.5GHz HF VHF UHF 4" Touch Screen Antenna Analyzer Measuring S Parameters, Voltage Standing Wave Ratio, Phase, Delay, Smith Chart
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RG316 Cable Jumper Pigtail UHF SO239 Female PL259 to SMA Male Adapter Connector Cable 15cm Pack of 2
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Product Description

Upgraded NanoVNA-H4 Vector Network Analyzer

Nanovna -H4 is developed by Hugen, with 10KHz-1.5GHz for Measuring S Parameters HF VHF UHF SWR, Phase, Delay, Smith Chart. 4.0 inch LCD touchscreen, mini and portable. It is a very handy & smart analyzer for electronics engineer, amateur radio operators, beginner or radio diy beginner.

Elevate Your Performance: Discover the 4 Key Features of Our Vector Analyzer

Upgraded NanoVNA-H4 Vector Network Analyzer

4.0 inch Touch Screen

Equiped with a 4.0 inch touch screen, you can operate the device by the screen or the multi-functional switch one the top.

Upgraded NanoVNA-H4 Vector Network Analyzer

1950 mAh Large Battery

4.0 inch screen also brings larger battery, NanoVNA-H4 comes with a 1950mA-h rechargeable battery, continuous working time up to 8 hours

Upgraded NanoVNA-H4 Vector Network Analyzer

Improved Accuracy

10KHz-1.5GHz Vector Network Analyzer for Measuring S Parameters HF VHF UHF SWR, Phase, Delay, Smith Chart

Upgraded NanoVNA-H4 Vector Network Analyzer

Compact Portable & Powerful

Tiny and handheld.The default firmware main function is used for antenna measurement.

Perfect Accuracy, Built-In: Short/Open/Load Calibration at Your Fingertips

Upgraded NanoVNA-H4 Vector Network Analyzer

Calibration is necessary whenever the frequency range is adjusted to ensure accurate measurements.

More Than Just a Tool: Perfect for Ham Radio and Beyond!

Upgraded NanoVNA-H4 Vector Network Analyzer

This compact, handheld Antenna Analyzer is a DIY enthusiast's dream, offering precise vector network measurement capabilities. Preloaded with firmware designed for antenna performance testing, it's the perfect tool for anyone looking to elevate their projects with professional-grade accuracy.

The Ultimate Ham Radio Gift: Everything You Need in One Complete Package!

Upgraded NanoVNA-H4 Vector Network Analyzer

Perfect for Ham Radio Enthusiasts! This complete package includes everything you need to get started. Whether you're a beginner or a seasoned pro, it's the ideal gift for anyone passionate about radio technology.

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Upgraded NanoVNA-H4 Vector Network Analyzer, SeeSii Latest V4.3 10KHz-1.5GHz HF VHF UHF 4" Touch Screen Antenna Analyzer Measuring S Parameters, Voltage Standing Wave Ratio, Phase, Delay, Smith Chart
Upgraded NanoVNA-H4 Vector Network Analyzer, SeeSii Latest V4.3 10KHz-1.5GHz HF VHF UHF 4" Touch Screen Antenna Analyzer Measuring S Parameters, Voltage Standing Wave Ratio, Phase, Delay, Smith Chart
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Price£90.46£13.50£16.99£13.99
Delivery
Get it 29 – 31 Jul
Get it 29 – 31 Jul
Get it as soon as Wednesday, Jul 23
Get it as soon as Wednesday, Jul 23
Customer Ratings
4.64.6 out of 5 stars746
4.44.4 out of 5 stars2,697
4.54.5 out of 5 stars103
4.54.5 out of 5 stars1,038
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Product details

  • Batteries ‏ : ‎ 1 Lithium Ion batteries required.
  • Package Dimensions ‏ : ‎ 16.99 x 12.8 x 5.31 cm; 331 g
  • Date First Available ‏ : ‎ 2 Mar. 2020
  • Manufacturer ‏ : ‎ Seesii
  • ASIN ‏ : ‎ B085CFHTBM
  • Item model number ‏ : ‎ NanoVNA-H4
  • Guaranteed software updates until ‏ : ‎ unknown
  • Best Sellers Rank: 20,179 in Business, Industry & Science (See Top 100 in Business, Industry & Science)
  • Customer reviews:
    4.6 out of 5 stars 746 ratings

Customer reviews

4.6 out of 5 stars
746 global ratings

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Customers say

Customers find the antenna analyzer to be a great piece of kit that works well. They appreciate its display clarity, with one customer noting it's easy to read and another mentioning it's visible on mobile phones.

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Ease of useFunctionalityDisplay clarity
4 customers mention ‘Ease of use’4 positive0 negative

Customers find the antenna analyzer easy to use and appreciate it as a great piece of kit.

"...(use the supplied cheat sheet and it's a breeze), otherwise it's a great tool with an easy to read display...." Read more

"...and this allows me to do that, I’m only using one facet of this great piece of kit and it has proved invaluable already!!..." Read more

"a nice bit of kit." Read more

"A really handy little device very pleased I bought it" Read more

4 customers mention ‘Functionality’4 positive0 negative

Customers find that the antenna analyzer works well.

"THis VNA seems to work well. I have mostly used it to measure home made Common Mode Chokes and to check VSWR for my vertical HV antenna...." Read more

"...a bit sceptical about this product, but when i tested it it does exactly as described. happy for now." Read more

"Comes with calibration blocks, well packaged and working as expected." Read more

"It works as expected, very useful tool..." Read more

3 customers mention ‘Display clarity’3 positive0 negative

Customers appreciate the display clarity of the antenna analyzer, with one customer noting it is easy to read and another mentioning it can be viewed on a mobile phone.

"...otherwise it's a great tool with an easy to read display...." Read more

"...I highly recommend the product, great value for the price, clear display screen. Really glad I went for the H4 version...." Read more

"easy to see on your mob phone when is going on at your home when you are away...." Read more

Works as expected
5 out of 5 stars
Works as expected
Comes with calibration blocks, well packaged and working as expected.
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Top reviews from United Kingdom

  • Amazon Customer
    5.0 out of 5 stars It works as expected, very useful tool
    Reviewed in the United Kingdom on 21 July 2022
    Size Name: 4 InchVerified Purchase
    I was a little sceptical about this device but it has exceeded all expectations, a little tricky to navigate the menu structure (use the supplied cheat sheet and it's a breeze), otherwise it's a great tool with an easy to read display.
    The only critical comment I can make is about the charging cable, it's a very cheap usb-c cable and doesn't work one way round, I use a higher quality cable and have no problems with it.
    2 people found this helpful
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  • FUS9631
    5.0 out of 5 stars Absolutely Brilliant!!
    Reviewed in the United Kingdom on 30 June 2022
    Size Name: 4 InchVerified Purchase
    I can say is this piece of equipment is worth its weight in gold, I love experimenting with antennas and this allows me to do that, I’m only using one facet of this great piece of kit and it has proved invaluable already!!

    Plenty of user videos on YouTube. I highly recommend the product, great value for the price, clear display screen. Really glad I went for the H4 version.

    If your into ham radio or even helium mining and think your antennas tuned, use this device and it will give you an accurate reading, I never rely on the manufacturers spec and always test.
    7 people found this helpful
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  • Lincoln
    5.0 out of 5 stars VNA
    Reviewed in the United Kingdom on 2 August 2024
    Size Name: 4 InchVerified Purchase
    THis VNA seems to work well. I have mostly used it to measure home made Common Mode Chokes and to check VSWR for my vertical HV antenna. It seems to agree with my MFJ -259C.
    One person found this helpful
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  • kenneth jenkins
    5.0 out of 5 stars easy to see on your mob phone when is going on at your home when you are away.
    Reviewed in the United Kingdom on 16 March 2024
    Size Name: 4 InchVerified Purchase
    a nice bit of kit.
    One person found this helpful
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  • Robert Hope
    5.0 out of 5 stars Just works
    Reviewed in the United Kingdom on 20 July 2024
    Size Name: 4 InchVerified Purchase
    i wash a bit sceptical about this product, but when i tested it it does exactly as described. happy for now.
    One person found this helpful
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  • Tony W.
    5.0 out of 5 stars NanoVNA-H4 Vector Network Analyzer
    Reviewed in the United Kingdom on 15 February 2024
    Size Name: 4 InchVerified Purchase
    A really handy little device very pleased I bought it
    One person found this helpful
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  • eddie
    5.0 out of 5 stars Very good
    Reviewed in the United Kingdom on 6 July 2024
    Size Name: 4 InchVerified Purchase
    Very good
    Helpful
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  • David S.
    3.0 out of 5 stars Works But!!
    Reviewed in the United Kingdom on 12 February 2023
    Size Name: 4 InchVerified Purchase
    Well I would have given it 5 stars but it didn’t work out of the box. After many tries I found out that removing the 4 screws holding the case together it would work perfectly. I’m guessing that the top case was making the tft screen thinking it was being touched.
    Having had this now for a few months. I would say it’s totally useless if you want it to work for more than just a few minutes. Very much simpler to use my array of other test equipment. Far too many issues with this one….
    4 people found this helpful
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Top reviews from other countries

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  • Rod
    5.0 out of 5 stars Very nice asset to the RF toolbox on the go.
    Reviewed in Canada on 6 April 2025
    Size Name: 4 InchVerified Purchase
    First thing I want to say is that I see a lot of low rating reviews complaining that it lacks instructions. Although true, you can completely disregard the negative reviews which state this.

    This is not a tool that you pick up and immediately know how to use it after reading a few pages of a manual. A tool like this is designed for people who know what they're looking at and what it is used for.

    Sure, if you're a beginner it's really hard to make sense of how it works, but there's an abundance of youtube videos and forums to explain this stuff.

    If the manufacturer needed to make a manual explaining every detail of its inner workings, the price wouldn't be as low as it is as it takes time and resources to make a decent manual.

    If you know how to run these things, it's an absolute must have if you work with RF on the go. The display on this one is much nicer than the original NanoVNA-H and the hardware is much faster.

    The RF cables that come with it are also a lot nicer than what came with the original NanoVNA-H.

    If you have an android device and the app store says the app is too old for your version of android, just do some googling and find the .apk file and manually install it. I got it working with my Samsung S23.
    Report
  • Claudiopi
    5.0 out of 5 stars prodotto ok
    Reviewed in Italy on 31 January 2025
    Size Name: 4 InchVerified Purchase
    ok funziona e fa quello che deve sono soddisfatto
    Report
  • Brett Churchyard
    3.0 out of 5 stars This is not a restaurant we are rating! How can you rate without use
    Reviewed in Australia on 21 November 2020
    Size Name: 4 InchVerified Purchase
    Just another chinese copy of a great product,
    works as it should that is why I gave it three stars.
    Lets see how long it lasts, then, I may give more or even less stars, depending
    Report
  • Chris B
    5.0 out of 5 stars Great SWR for the money
    Reviewed in the United States on 21 July 2023
    Size Name: 4 InchVerified Purchase
    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 ultra-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.).only using for SWR across multiple bands, but beats the price on buying multiple meters.
    Report
  • SkipH
    5.0 out of 5 stars My Antenna is KILLING IT!!
    Reviewed in the United States on 28 May 2022
    Size Name: 4 InchVerified Purchase
    I bought the nanoVNA in order to tune a new 20-meter dipole antenna that I was installing. The antenna is the Radiowavz 20-DP11 with 1:1 balun. I was able to buy the preassembled antenna for about the same as it would have cost to buy the center insulator/balun and the #14 AWG copper clad steel antenna wire. It is a very well constructed antenna. Anyway - back to the nanaVNA - I got the antenna up about 40 to 50 feet in some big trees in my yard and took the first reading with the nanoVNA. My goal was to tune it for lowest SWR at 14.250 MHertz - the center SSB phone section of the 20-meter band. I built an Excel spreadsheet to calculate frequency vs. antenna leg length with an assumed velocity factor of 0.98. My first reading on the nanoVNA indicated that each leg was about 10-inches too long. I lowered the antenna and reduced each leg by about 8-inches - not by cutting them - but by twisting them back over the leg of the antenna. My second reading on the nanoVNA indicated that I was still about an inch too long so I lowered the antenna and folded back another inch. This time it read spot on with the lowest SWR of 1.28 at exactly 14.250-MHertz. So, lowered the antenna again and cut off several inches, twisted the rest back over the leg, secured with a couple of wire tires and taped it up good. I came back into the shack, fired up the rig and immediately contacted Italy, Bulgaria and Azores with a 59 signal report. I don't have an amplifier and only run 100-watts barefoot but I consistently get signal reports where the the contact is surprised that I'm not running 1000-watts into a beam antenna. The antenna works great across the entire 20-meter phone band and I have been surprised and delighted with the difference that a finely tuned resonant antenna makes vs a compromise antenna like my 160-meter G5RV. The nanoVNA apparently was spot on with helping me find the right length of my antenna. I decided to try this before in vesting in a $300 or $400 antenna analyzer and I'm glad I did. FYI - there is an excellent user manual available for the nanoVNA on the nanoVNA group on the groups.io conference board. 73 - K4IXO
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