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NanoVNA V2
NanoVNA V2 (S-A-A-2) is a 4GHz vector network analyzer (VNA) capable of measuring antennas, filters, duplexers, and amplifiers. To bypass the hardware limitations of the legacy V1, original NanoVNA developers teamed up with RF engineers to form NanoRFE to build the V2 as a completely new, from-scratch architecture.
V2 Plus4 is the latest design which fixes the drift and linearity issues with older versions. It uses our new VNA-R architecture featuring temperature drift cancellation and reduced crosstalk, showing no visible drift in all indoor conditions.
Compared to legacy V1 NanoVNAs and market clones, V2 Plus4/Plus4 Pro do not use harmonics for measurements, improving performance significantly, achieving 90% less trace noise, and is the only low cost VNA to give you highly repeatable and reliable measurements comparable to professional instruments. The wide frequency range covers common cellular, Wi-Fi, and IoT bands, as well as HF, VHF, and UHF amateur radio bands.
NanoRFE devices are supported directly by the unified original development team, guaranteeing authentic hardware and dependable performance.
- No noticeable drift, allowing calibrations to be kept for > 3 months (compared to < 30 minutes for other low cost VNAs)
- Lowest measurement noise due to using RF rated parts and factory tuning (see example measurement). V2 Plus4 Pro increases signal to noise ratio further by an adjustable IF filter, improving performance at lower averaging.
- Improved shielding and all-aluminum enclosure of the NanoVNA V2 Plus4 increases its dynamic range to >90dB, achieving similar results as professional VNAs, and allows measuring duplexers.
- S parameters export, custom calibration kit parameters & advanced calibration methods (NanoVNA-QT software)
- TDR / Time Domain measurements allow testing cable length and discontinuities.
- Improved USB protocol allows full speed streaming of measured data to the PC.
- Sold and maintained by original inventors, ensuring you receive authentic hardware, strict quality control, and continued software updates.
Update: V2 Plus4 versions now available for order: although the components shortage is worsening (original parts are harder to find as low quality counterfeits flood the market), we have finally secured enough ICs for another batch of NanoVNA V2 Plus4s, now available for order from our official store. Cost of components are still rising, so prices may need to be adjusted in the future. Thank you for your understanding.
Where to buy
Official stores
Safe places to buy an original NanoVNA V2:
Many sellers advertise higher specs using incorrect or lower quality parts, resulting in highly noisy trace measurements. For a master list of authorized sellers, bad sellers, and a guide on spotting counterfeit devices, please visit our Authentic NanoVNA vs. Clone Guide.
How accurate is it?
The NanoVNA V2 Plus4 has been independently tested by users and radio amateurs to match the performance and smith charts of professional, high-end instruments like the Keysight FieldFox and HP-8753E.
View the full Professional VNA Comparisons & Charts »
Here are some sample measurements we made of a cascaded SAW filter and a power amplifier using a NanoVNA V2 Plus4 (click the images to view them at full size):
Note that some averaging is needed to get the NanoVNA V2 Plus4 to near 100dB dynamic range.
Typical noise floor (V2 Plus4 Pro, calibrated, IFBW=0.8kHz, AVG=20)
How to use and calibrate NanoVNA V2
Looking for guides on how to operate your device? We have moved our tutorials to dedicated pages to make them easier to find:
Battery Installation & Information
The V2 Plus4 accepts a standard 18650 flat-top unprotected 3.6V lithium-ion battery. Operation without a battery (using only USB power) is also fully supported. See here for how to insert the battery.
The device includes on-board battery protection and charging circuitry. Important Note: After initially inserting a battery, you must plug in USB power at least once to activate the battery management IC before the device will turn on.
Documentation
User manuals
User Manual for all NanoVNA V2 versions
V2 Plus4 User manual by NC4BR
Menu maps
Menu Map for all NanoVNA V2 versions
V2 Plus4 Menu Map by NC4BR
Software & Firmware Updates
We provide comprehensive software support for Windows, Linux, and Mac, as well as regular firmware updates to ensure your device functions flawlessly.
Download NanoVNA Software & Drivers »
Download V2 Firmware Updates »
Specifications
The following are the specifications of NanoVNA devices manufactured by HCXQS/NanoRFE.
Parameter |
Board version |
Specification |
Conditions |
|---|---|---|---|
Frequency range |
V2_2, V2 Plus |
50kHz - 3GHz |
- |
V2 Plus4, |
50kHz – 4.4GHz |
- |
|
Frequency resolution |
All |
0.01MHz |
- |
System dynamic range |
V2_2, V2 Plus |
60dB |
|
V2 Plus4 |
90dB |
AVG=20, 1GHz |
|
80dB |
AVG=5, 3GHz |
||
V2 Plus4 Pro |
96dB |
BW=1.6kHz, AVG=20, 1GHz |
|
90dB |
BW=1.6kHz, AVG=5, 1GHz |
||
80dB |
BW=4.7kHz, AVG=5, 3GHz |
||
S11 noise floor |
All |
-50dB |
f < 1.5GHz |
-40dB |
f < 3GHz |
||
Sweep points |
V2 Plus4 |
1 – 1024 points (with NanoVNA-QT software). More points (up to 65535) are possible depending on the performance of your PC. |
- |
Sweep time |
V2 Plus4 |
0.25s |
Default sweep settings |
V2 Plus4 Pro |
0.16s |
Default sweep settings |
|
Power supply |
All |
USB, 4.6V – 5.5V |
- |
Supply current |
All |
500mA typ |
No charging |
Battery current, charging |
All |
1.2A typ |
- |
Battery capacity |
V2 Plus4, |
3200mAh |
- |
Operation ambient temperature |
All |
0℃ - 45℃ * |
* by design, not tested in production |
Ambient temperature during battery charging |
All |
10℃ - 45℃ |
- |
Note: NanoVNA V2 Plus4 Pro now allows measuring crystals by an adjustable bandwidth setting. All other hardware versions can not measure crystals because of the rapid switching of the test signal.
Schematics and PCB layout
The schematics and PCB layout files of the V2.2 version are available here:
https://github.com/nanovna-v2/NanoVNA2
The NanoVNA V2 design is licensed under CC-BY-NC-SA and commercial use without specific permission is forbidden. You need to obtain specific written permission every 3 months to sell hardware using this design.
V2.3 and V2.4 designs are confidential and proprietary, and reverse engineering is forbidden.



