About NanoVNA V2

NanoVNA V2 (S-A-A-2) 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.

Where to buy

Only HCXQS and NanoRFE support the original developers of the S-A-A-2.

As of January 2021 most V2 devices sold on Aliexpress are clones, many of which perform badly, and some users have reported firmware incompatibility. See official stores below to ensure you get a supported version. See FAQ | How to avoid a bad clone.

All board revisions before Plus4 are not compatible with a metal enclosure, which worsens dynamic range by 10dB at 3GHz. All original NanoVNA V2 devices before Plus4 use an acrylic or 3D printed enclosure, and only Plus4 has improved shielding that achieves high dynamic range with a metal enclosure.

Official stores:

• Official store on Tindie
• Official store on Aliexpress
• Official store on Taobao (NanoVNA V2 唯一官方淘宝店)
• Note: V2 Plus4 is temporarily out of stock in all stores, please check back after Chinese New Year.

Authorized distributors:

• RTL-SDR blog store

The following stores are known to sell clones:

• Passion Radio
• R&L electronics

Note that OwOComm does not manufacture V2 devices and does not provide direct technical support. Please use the below support forum or click "Contact Seller" on the Tindie or Aliexpress page.

Because of past disputes about unfair competition, we no longer permit a certain manufacturer from making and selling copies of the V2 PCB design and have issued a public statement in October 2020: https://groups.io/g/nanovna-users/message/17875
We currently wait and see if he will respect the wishes of the developers of a design he is making money from or if he will take your design and run with it. For all developers who are looking for a partner to produce and market your design, we recommend looking for a more trustworthy partner such as Seeed Studio, Elecrow, or Makerfabs, just to name a few.
Thank you for your understanding.

User groups / Forums

Discussion forum
https://groups.io/g/NanoVNAV2

Facebook
https://www.facebook.com/nanovnav2/

Discord
https://discord.gg/mF8AZrY

Specifications

Parameter	Board version	Specification	Conditions
Frequency range	V2_2, V2 Plus	50kHz - 3GHz	-
	V2 Plus4	50kHz – 4.4GHz	-
Frequency resolution	All	10kHz	-
System dynamic range (calibrated)	V2_2, V2 Plus	70dB	f < 1.5GHz
		60dB	f < 3GHz
	V2 Plus4	90dB	f < 1GHz 20x averaging
		80dB	f < 3GHz 5x averaging
		70dB	f < 3GHz No averaging
S11 noise floor (calibrated)	All	-50dB	f < 1.5GHz
		-40dB	f < 3GHz
Sweep rate	V2_2	100 points/s	f >= 140MHz
		80 points/s	f < 140MHz
	V2 Plus	200 points/s	f >= 140MHz
		100 points/s	f < 140MHz
	V2 Plus4	400 points/s	f >= 140MHz
		200 points/s	f < 140MHz
Sweep points (on device)	All	10 – 201 points, adjustable	-
Sweep points (USB)	All	1 – 1024 points, adjustable	-
Power supply	All	USB, 4.6V – 5.5V	-
Supply current	All	400mA typ, 500mA max	No charging
Battery current, charging	All	1.2A typ	-
Battery capacity	V2_2 V2 Plus	User defined	-
	V2 Plus4	3200mAh	-
Operation ambient temperature	All	0℃ - 45℃ *	* by design, not tested in production
Ambient temperature during battery charging	All	10℃ - 45℃	-

Note: All V2 versions switch on and off the test signal rapidly and can not measure crystals or be used as a signal generator. See FAQ. For measuring crystals we recommend using an original NanoVNA by edy555.

Accuracy comparison between NanoVNA V2 and HP-8753E by DD1US

Basic usage

NanoVNA V2 Video Tutorials

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

Required components

To use the NanoVNA V2 for one port measurements (e.g. antenna impedance), you will need the following:

• NanoVNA V2 main unit
• SMA cable, male-male
• Calibration standards: Short, Open, and Load

Performing measurements

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

• Configure the measurement frequency range:

  Select STIMULUS > START and STIMULUS > STOP.

• Calibrate:
  1. Enter the CAL menu and connect a SMA male-male cable to port 1 of the VNA.
  2. Connect the OPEN standard to the cable end and select "OPEN". Wait for menu highlight.
  3. Connect the SHORT standard to the cable end and select "SHORT". Wait for menu highlight.
  4. Connect the LOAD standard to the cable end and select "LOAD". Wait for menu highlight.
  5. Select "APPLY". Calibration should now be active and you can start performing measurements.

Documentation

User manuals

Menu maps

Firmware downloads

Go to the Hardware versions page which lists the latest stable firmware versions for each hardware variant.

There are also experimental firmware releases at downloads.

Software

There are two PC programs compatible with the S-A-A-2. NanoVNA-QT is the native V2 software and allows adjustable sweep points and firmware updating. NanoVNA-Saver was originally developed for the V1 NanoVNA but now also has support for V2.

NanoVNA-QT:

https://github.com/nanovna/NanoVNA-QT/releases

NanoVNA Saver:

https://github.com/zarath/nanovna-saver

Schematics and PCB layout

The schematics and PCB layout files are available here:

https://github.com/nanovna/NanoVNA-V2

Permission is granted to use the design commercially and non-commercially without royalties. However, note that it is in your interest and everyone's interest to abide by basic business ethics.