The miniVNA is a small and inexpensive antenna analyzer from mini Radio solutions. It connects to a computer via USB and it can measure SWR, RL, Rs, Z +/-jx, Phase, Cable length, R/L/C in the range 0.1Mhz to 180MHz. It comes with a quite all right control software for windows. There is also a Gnome version of the software called gVNA. Unfortunately, it hasn't been updated for three years now.
This document describes the miniVNA USB protocol that has been reverse engineered from user manuals and available software.
The miniVNA can work in two modes:
- Reflection mode – used for measuring various parameters on antennas and cables.
- Transmission mode – used for measuring filters attenuators, etc.