Beware of cheap underperforming clones
As of 2022 there are many badly performing clones on the market. V2/3GHz NanoVNA uses parts like ADF4350 and AD8342 which are costly and clones have been cutting costs by using salvaged or reject parts.
See official store and look for V2 Plus4/V2 Plus4 Pro versions only to avoid getting a bad clone. We have stopped selling V2.2 versions since October 2020, so all V2 hardware that are not Plus or Plus4 are not made by us and we can not guarantee performance.
NanoVNA V2 Forum
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Quick test of the new firmware 20200501 and NanoVNA QT software 20200507
Kurt Poulsen 2020/05/07 17:11
A quick test where the SAA-2 was calibrated with HP85033C 3.5mm male kit and by use of Touchstone files with 500 points from 0.1 to 3000MHz, also used for sweep with 500 point, shows excellent results for dynamic range for S11 and S21 under the condition that CH0 (TX port) terminated with 50 OHM and CH1 (RX port) left open, 50ohm terminated or shorted. The isolation is very good
A sweep of a professional HP 10cm airline showed also excellent trace following along the circumference of the Smitchart.
Test of a SMA 18GHz 6dB attenuator showed that the phase measurement now is OK which was one of the fixes
So congratulation Gabrielle with this superb product.
Kind regards
Kurt.
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