A standard NanoVNA SSA v2.2 clone but very sturdy construction sets it above the rest, plus a quality set of cal adapters and accessories and a nice case. Not the least expensive option but still a great value, construction was closer to a mainstream commercial product rather than a home-built project like the rest. The 4" screen is a must have in a NanoVNA, makes the unit much more usable. Also I was able to update the firmware to the most current 10132020 version with no difficulty.
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