S-A-A-2 NanoVNA V2

A Vector Network Analyzer (VNA) is an extremely useful tool for radio hobbyists as it allows you to measure and tune antennas and filters, as well as measure cables. The most affordable such instrument for some time has been NanoVNA.

NanoVNA V2 Vector Network Analyzer can be viewed as next updated version of NanoVNA. The NanoVNA V2 (aka S-A-A-2) is a vector network analyzer (VNA) with 50 kHz to 3 GHz frequency range.

NanoVNA V2 is a low cost 3GHz T/R vector network analyzer developed by HCXQS in collaboration with OwOComm. The V2 hardware is a new from-scratch design and is not based on the original NanoVNA by edy555. Compared to the original NanoVNA, V2 does not use harmonics for measurements and achieves higher dynamic range.

The S-A-A-2/NanoVNA_V2 uses a similar user interface to the NanoVNA, but with a different technical architecture. The 50K-1500MHz frequency range of the si5351 direct output provides better than 70dB dynamic, The extended 150M-3000MHz band provides better than 60dB of dynamics, and S11 noise floor (calibrated): -50dB (up to 1.5GHz), -40dB (up to 3GHz)

Because I wanted a somewhat better VNA than NanoVNA, I decided to get NanoVNA V2. I ordered this product:
S-A-A-2 NanoVNA V2 50kHz – 3GHz 3.2 Inch Large Screen 3G Vector Network Analyzer S-A-A-2 NanoVNA V2 Antenna Analyzer Shortwave HF VHF UHF Measure Duplexer Filter

Here is my NanoVNA v2 in use for measuring RF Demo kit:

20200929_140940

Features:

Portable and compact, easy to use and carry.
Measurement frequency range is 50KHz~3GHz.
High stability, high sensitivity, high accuracy, greatly improved performance.
Metal housing, 3.2-inch large screen is more accurate for touching, easy to operate, no need to connect power, get rid of the shackles of data cable, and can be used alone.
This product can reach 3GHz, can measure 2.4GHz antennas, can also measure duplexer, filter.

Specifications:

Material: PCB+metal
Main color: black+gold
Measurement frequency range: 50KHz-3GHz
System dynamic range (after calibration): 70dB (50k to 1.5GHz); 60dB (up to 3GHz)
S11 noise floor (after calibration): -50dB (up to 1.5GHz); -40dB (up to 3GHz)
Sweep rate: 100 points / second
Sweep points (on device): 10-201 points, adjustable
Sweep points (USB): 1-1024 points, adjustable
Power supply: USB, 4.6V–5.5V
RF port: SMA
USB interface: Micro USB
Display screen: 3.2-inch TFT
Battery: 1 * lithium battery, 1950mAh (included)
Port 2 return loss: ≥13dB (up to 3GHz), 20dB (up to 1.5GHz)
Display tracking: 4, Marking: 4, Setting save: 5
Operating ambient temperature: 0-45℃
Item size: 115 * 80 * 27mm / 4.5 * 3.1 * 1.1in

Note:

1. Software download: https://github.com/nanovna/NanoVNA-QT/releases
2. User guide: https://github.com/nanovna/NanoVNA-QT/raw/master/ug1101.pdf

I have tested only part of the features, but I must say that I like this new model. The better dynamic range and higher frequency range are very good features. This one comes with decent casing and internal battery. And the cost was in around same price range than NanoVNA was one year ago. NanoVNA V2 really feels like a huge improvement on the features I have tested over my old NanoVNA with old firmware in it.

This is a very decent product, delivered with USB cable, two semi-rigid extension cables, and open/short/load/through pieces. It is a fantastic piece of kit for the home RF lab. Price vs. funtionality blew my mind. Worth every penny, but doesn’t come close in performance to the high-end equipment.

Here are some videos on NanoVNA V2:

NanoVNA V2: Female Calibration Kit vs. Port Extensions

https://www.youtube.com/watch?v=_H2gpB30SXU

NanoVNA V2: RTL-SDR.com FM Bandstop Filter Measurements via NanoVNA QT

https://www.youtube.com/watch?v=vPRxjm2obdo

#318: NanoVNA comparison measuring a duplexer – NanoVNA-H4 and SAA-2N

https://www.youtube.com/watch?v=GipCVEsiqXc

NanoVNA V2: Measuring DIY Microstrip L-Band LNAs

https://www.youtube.com/watch?v=scU5MLnxBJ0

NanoVNA V2: Measurements of an Active Device (SAWbird+ NOAA) with NanoVNA-QT

https://www.youtube.com/watch?v=GCcygWhmPW0

NanoVNA V2 First Measurements V2: Log Spiral & Clover Antennas (Above 900 MHz & up to 3GHz)

https://www.youtube.com/watch?v=JqpGvYg1XDs

NanoVNA V2: RTL-SDR.com FM Bandstop Filter Measurements via NanoVNA QT

https://www.youtube.com/watch?v=vPRxjm2obdo

NanoVNA V2: Measuring DIY Microstrip L-Band LNAs

https://www.youtube.com/watch?v=scU5MLnxBJ0

NanoVNA V2: Rebuilding a Lodestar Variable Attenuator Switch Box

https://www.youtube.com/watch?v=QJpLL6Y3SuU

#754 How To Use NanoVNA V2 To Find Antenna Resonant Frequency

https://www.youtube.com/watch?v=b88f_DEm5rg

TTT320 NanoVNA V2 Review and Comparison

https://www.youtube.com/watch?v=W03NaNt_bJA

29 Comments

  1. Tomi Engdahl says:

    NanoVNA V2 / SAA-2 / S-A-A-V2 / SAA-2N / All V2 flavours
    Users discussion and Support Group
    https://groups.io/g/NanoVNA-V2

    Reply
  2. Tomi Engdahl says:

    Which NanoVNA Should I buy? – TheSmokinApe
    https://www.youtube.com/watch?v=xNNtM_mUAqc

    In the “Lid Tips” series where we discuss topics of intereast to Ham or Amateur Radio Operators. In this episode we discuss my buddy Stan and his desire to purchase a NanoVNA

    Reply
  3. Tomi Engdahl says:

    NanoVNA V2: Female Calibration Kit vs. Port Extensions
    https://www.youtube.com/watch?v=_H2gpB30SXU

    In this video I make a comparison between 1 and 2 port device measurements when using a female calibration kit vs. a negative port extension to move the measurement plane back to the male SMA connector when using the stock NanoVNA V2 calibration kit. I observe that a negative port extension (negative electrical delay) is probably not a reliable way of making measurements with the NanoVNA V2, especially at microwave frequencies. I also provide some other recommendations for possibly de-embedding a 2-port device measured using a standard NanoVNA V2 calibration kit.

    #317: NanoVNA Port Extension using the Electrical Delay setting
    https://www.youtube.com/watch?v=bEPUePy_buM

    Reply
  4. Tomi Engdahl says:

    Use NanoVNA to measure coax length

    [https://www.youtube.com/watch?v=9thbTC8-JtA](https://www.youtube.com/watch?v=9thbTC8-JtA)

    Reply
  5. Tomi Engdahl says:

    #317: NanoVNA Port Extension using the Electrical Delay setting
    https://m.youtube.com/watch?v=bEPUePy_buM

    Julkaistu 30.7.2020
    The user calibration, described in video #313 (https://youtu.be/x-tbvAbh9jk), establishes a calibration or reference plane for the complex reflection/impedance measurement on the VNA. If you need to use adapters, fixtures, cables, etc. to connect to you DUT, you may need to apply a port extension to move the calibration plane to the DUT end of these “additions”. This video discusses what a port extension is, why you might need it, and how to do it on the NanoVNA.

    NanoVNA V2: Female Calibration Kit vs. Port Extensions
    https://m.youtube.com/watch?feature=youtu.be&v=_H2gpB30SXU

    Julkaistu 11.8.2020
    In this video I make a comparison between 1 and 2 port device measurements when using a female calibration kit vs. a negative port extension to move the measurement plane back to the male SMA connector when using the stock NanoVNA V2 calibration kit. I observe that a negative port extension (negative electrical delay) is probably not a reliable way of making measurements with the NanoVNA V2, especially at microwave frequencies. I also provide some other recommendations for possibly de-embedding a 2-port device measured using a standard NanoVNA V2 calibration kit.

    Reply
  6. Tomi Engdahl says:

    SMA connectors are rated for up to 500 mating cycles,[5] but to achieve this it is necessary to properly torque the connector when making the connection. A 5/16-inch torque wrench is required for this, set to 3–5 in·lbf (0.3 to 0.6 N·m) for brass, and 7–10 in·lbf (0.8 to 1.1 N·m) for stainless steel connectors.
    https://en.m.wikipedia.org/wiki/SMA_connector

    Reply
  7. Tomi Engdahl says:

    Just as a note: when changing the span/center frequency, the VNA should be recalibrated.
    You can find this out first the hard way

    Reply
  8. Tomi Engdahl says:

    Upgrade you NanoVNA v2 to v2 plus (v2.3) to get 2x faster sweep (200 points/s) and noise improvements: https://github.com/eried/Research/tree/master/NanoVNA/v2/upgrade_v2.2_to_plus

    Reply
  9. Tomi Engdahl says:

    NanoVNA V2 Plus
    https://www.tindie.com/products/hcxqsgroup/nanovna-v2-plus/?utm_source=hackaday&utm_medium=link&utm_campaign=fromstore

    3GHz second generation NanoVNA vector network analyzer, designed in collaboration with OwOComm.

    Specifications:

    Frequency range: 50kHz – 3GHz
    System dynamic range (calibrated): 70dB (up to 1.5GHz), 60dB (up to 3GHz)
    S11 noise floor (calibrated): -50dB (up to 1.5GHz), -40dB (up to 3GHz)
    Sweep rate: 200 points/s (140MHz and above), 100 points/s (below 140MHz)
    Display: 2.8”, 320 x 240
    USB interface: Micro USB
    Power: USB, 300mA
    Battery: not included. Includes charging circuitry. User can install a 1000mAh – 2000mAh lithium-ion battery with maximum dimensions 6 x 40 x 60 mm.
    Battery connector: JST-XH 2.54mm
    Maximum sweep points (on device): 201
    Maximum sweep points (USB): 1024
    Port 2 return loss (1.5GHz): 20dB typ
    Port 2 return loss (3GHz): 13dB min
    VNA-QT software supported platforms: Linux, Windows (7+), Mac OS

    VNA basics

    A VNA (Vector Network Analyzer) measures the frequency dependent reflected and transmitted power of a high frequency network (RF Network).

    The NanoVNA V2 measures the following:

    Reflection coefficient: S11
    Transmission coefficient: S21

    The following items that can be calculated from these can be displayed:

    Return loss
    Insertion loss
    Complex impedance
    Resistance
    Reactance
    SWR

    Performing measurements

    The basic operation and menu structure of the NanoVNA V2 is identical to the original NanoVNA.

    Reply
  10. Tomi Engdahl says:

    Brief comparison of NanoVNAV2 with a professional VNA HP-8753E
    https://www.dd1us.de/Downloads/Brief%20comparison%20of%20NanoVNA%20V2%20with%20a%20professional%20VNA%20HP-8753E.pdf

    The first results with the NanoVNA V2 are quite encouraging.

    Reply
  11. Tomi Engdahl says:

    How to properly use a NanoVNA V2 Vector Network Analyzer (Tutorial)
    https://m.youtube.com/watch?v=_pjcEKQY_Tk

    Is this antenna good or bad, and for which frequency is it useful? A question I am often asked. Because a lousy antenna reduces the range of a device considerably. Or another question: Did the supplier cheat on this filter? At the end of this video, you will be able to answer these questions with confidence. And you know everything you always wanted to know about how to properly use a NanoVNA and the Smith Chart.

    Reply
  12. Tomi Engdahl says:

    How to properly use a NanoVNA V2 Vector Network Analyzer (Tutorial)
    https://www.youtube.com/watch?v=_pjcEKQY_Tk

    Reply
  13. Tomi Engdahl says:

    How to properly use a NanoVNA V2 Vector Network Analyzer & Smith Chart (Tutorial)
    https://m.youtube.com/watch?v=_pjcEKQY_Tk&feature=share

    Reply
  14. Tomi Engdahl says:

    NanoVNA V2 [Review]-How to Perform Calibration and Measure an Antenna
    https://www.youtube.com/watch?v=4ti218ZUgaE

    NanoVNA-QT (PC software)- How to use VNA_QT Software
    https://www.youtube.com/watch?v=Mp8hU7yRIYs&list=UUgDFPTh3yf3aNpTxGixYZXQ&t=0s

    Reply
  15. Tomi Engdahl says:

    If you have common mode noise issues, the common mode ferrite chokes attenuation can be measured with NanoVNA as described on the below video.

    https://www.youtube.com/watch?v=fEsmarnM6nE

    Comparing the NanoVNA with Rigol DSA815, I’ve got similar results.
    Up to 0.4dB difference sounds good for the NanoVNA price.

    Reply
  16. Tomi Engdahl says:

    #359​ How to properly use a NanoVNA V2 Vector Network Analyzer & Smith Chart (Tutorial)
    https://www.youtube.com/watch?v=_pjcEKQY_Tk

    Reply
  17. Tomi Engdahl says:

    Simple benchmark of NanoVNA v2 using a notch filter.
    Not an exhaustive test, but I share it anyway ..

    https://iz7boj.wordpress.com/2021/03/21/measurement-of-a-nooelec-fm-bandstop-filter-with-nanovna/

    Reply
  18. Tomi Engdahl says:

    The NanoVNA does not have enough dynamic range to tune a duplexer properly. https://www.youtube.com/watch?v=GipCVEsiqXc

    Reply
  19. Tomi Engdahl says:

    Another new nanoVNA version:

    NanoVNA V2 Plus4
    4GHz 4 inch 90dB dynamic range vector network analyzer
    https://www.tindie.com/products/hcxqsgroup/nanovna-v2-plus4/?utm_source=hackaday&utm_medium=link&utm_campaign=fromstore

    NanoVNA V2 Plus4
    https://nanorfe.com/nanovna-v2.html

    4GHz second generation NanoVNA vector network analyzer, our own design.

    The V2 Plus4 is a new design not based on the original NanoVNA, and uses 4GHz synthesizers instead of harmonics. The latest hardware version with 4″ display, aluminum case, higher dynamic range, and 4 times the sweep speed of the original V2.
    Features:

    up to 90dB dynamic range, can measure duplexers (see comparisons and specifications below)
    4 inch display
    4x faster sweep speed (400 points/s)
    50kHz – 4GHz frequency range
    1024 point sweep (with NanoVNA-QT software)
    if DHL shipping is selected, includes 3200mAh 18650 battery
    Accepts standard flat-top 18650 lithium-ion battery, includes on-board protection and charging

    Note: All NanoVNA V2 versions switch on and off the test signal rapidly, can not measure crystals and can not be used as a signal generator.

    Reply

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