Improved USB protocol allows full speed streaming of measured data to the PC.TDR / Time Domain measurements allow testing cable length and discontinuities.S parameters export, custom calibration kit parameters & advanced calibration methods (NanoVNA-QT software).No noticeable drift, allowing calibrations to be kept for > 3 months (compared to 90dB, achieving similar results as professional VNAs, and allows measuring duplexers.The main improvements in NanoRFE's NanoVNAs are: The wide frequency range covers common cellular, Wi-Fi, and IoT bands, as well as HF, VHF, and UHF amateur radio bands.
It uses our new VNA-R architecture featuring temperature drift cancellation and reduced crosstalk, showing no visible drift in all indoor conditions.Ĭompared to other NanoVNA versions, 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. V2 Plus4 is the latest design which fixes the drift and linearity issues with older versions. It is a new from-scratch design by HCXQS/NanoRFE not based on the earlier edy555 V1 design. After that, when it's on the radio you get what you get.NanoVNA V2 (S-A-A-2) is a 4GHz vector network analyzer (VNA) capable of measuring antennas, filters, duplexers, and amplifiers.
I use a small magnetic base on top of a steel filing cabinet to test mine with, and while that's not "typical" it does provide a repeatable test that easily and quickly reveals the resonant points of the antenna (single or multiband) and from there I can decide if it's working or not. So take SWR readings of handheld antennas with a grain of salt, you're never going to get a "pretty" reading from them unless you use a consistent test platform to verify them with. Even mounted on a handheld, the groundplane is a bit "dynamic", meaning just holding the radio and the proximity of it to other conductors (along with your head while you talk into it) will drastically change the operating environment of the antenna.
If you're just connecting the handheld antenna to the end of a piece of coax or onto the analyzer itself it's going to be a different size and shape groundplane than the antenna was designed to work with on a radio. Handheld antennas rely on the handheld chassis itself for a groundplane.
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