Using is pointless without proper calibration. Here’s how to do it efficiently:
Ideally, you want to find the lowest point of SWR (SWR < 1.5:1 is considered good).
). This is critical for designing matching networks using capacitors and inductors.
You can enable up to four independent traces in NanoVNA-Qt. Each trace can be configured to display different parameters: nanovna-qt pc software with the s-a-a-2
Add your user account to the dialout group to allow USB serial communications without root permissions: sudo usermod -a -G dialout $USER . 2. Connecting the S-A-A-2 to NanoVNA-QT To establish a successful connection, follow this sequence:
Choose the correct COM port (Windows) or serial device (macOS/Linux).
The S-A-A-2 features a hardware design that supports frequencies from . The device alone has screen size and data limits, but the NanoVNA-QT software improves your workflow in several ways: How to use NanoVNA QT Software Using is pointless without proper calibration
: Measurements appear inaccurate after changing the sweep range. Solution : The S-A-A-2 automatically clears the active calibration when the frequency sweep range is changed. You must either perform a new calibration or recall a saved calibration that matches the new frequency range.
The is a powerful tool for radio hobbyists, ham radio operators, and engineers . It measures antennas, filters, and cables. While the small screen on the device is handy for quick field checks, connecting it to a computer unlocks its full potential. The official companion program for this hardware is NanoVNA-QT .
: While you can calibrate on the device, performing it through NanoVNA-QT allows for higher point counts and more precise storage of calibration sets . You can enable up to four independent traces in NanoVNA-Qt
Configure the number of points (up to thousands for high resolution) and sweep speed.
The S-A-A-2 uses a standard USB-CDC (Communications Device Class) interface. Windows 10/11 will automatically install the drivers.