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.

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s11 Measurements below 142 MHz

Mike, AA9VI 2021/09/27 07:05

I purchased a Nano VNA V2 Plus 4 from the Tindie site but I noticed something strange.  Below 142 MHz I seem to have a ton of noise in my measurements after an S11 open, short, and thru cal.  Has anyone else seen this?  I want to make measurements in the 2-60 MHz band but I can't with all the noise.  I should have something close to a cluster of points on 50 ohms or short on the Smith Chart after the cal but the trace is all over the place.  Calibrations > 142 MHz seem just fine.  So I'm confused.

Thanks,
Mike

OwO 2021/09/27 10:35

Please contact the store with your order number for after sales service. In the mean time you can also try going over U303 with a soldering iron and some flux.

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