Beware of cheap underperforming clones
As of 2023 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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Only noise/static? Can't calibrate or measure (NanoVNA v2 Plus)
tglaria 2025/09/30 06:56
I've been trying to use my NanoVNA without success and for the last couple of days it's just been showing only noise and don't know how to troubleshoot.
Can this device be fixed?
What / How to test?
Same image with either 'nanorfe-20220814-v2plus45' or 'nanorfe-20250121-v2plus45' firmware files.
(I get the same graphs on the LCD display when using it in standalone)
Glenn n6gn 2025/10/04 05:52
Do you get the same result when calibration is turned off? Clear Measurements, Clear.
It could be that you have a corrupt calibration so the ('corrected' results are just the difference of big numbers and look like noise. Could also be that your unit has stopped measuring properly.
Siegfried Jackstien 2025/10/04 20:22
a v2plus4?? (V2+4)
or a v2plus ( V2+)
????
dg9bfc Sigi
Am 30.09.2025 15:56 schrieb "tglaria via groups.io"
<tglaria=cadetech.cl@groups.io>:
> I've been trying to use my NanoVNA without success and for the last couple
of days it's just been showing only noise and don't know how to troubleshoot.
>
> Can this device be fixed?
>
> What / How to test?
>
> Same image with either 'nanorfe-20220814-v2plus45' or
'nanorfe-20250121-v2plus45' firmware files.
>
> (I get the same graphs on the LCD display when using it in standalone)
>
> 
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