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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Strange problem with Dislord v1.0.39 firmware

Alan “W2AEW” Wolke 2020/09/30 14:49

I updated my -H4 with Dislord's latest v1.0.39 firmware, and for the most part it looks great - up to 401 points, adjustable measurement BW, etc. All good. However, I have a strange problem with it under certain conditions:

I was setting up to measure a VHF duplexer as a test. I set Start frequency to 460MHz, Stop frequency to 475MHz, just one trace enabled to show S21, using 1kHz BW and 401 points. After setting the stimulus and trace/channel, I run though the calibration process and save it. But, once I did that, the S21 trace was above 0dB when the connectors were left open! I expected it to be -80dB or better, but got this strange result. I reverted back to my original firmware (Hugen's v0.0.5), and the problem isn't there.

Am I setting something wrong, or did I uncover a bug?

Dragan Milivojevic 2020/10/01 00:23

This is a group for the V2 (SAA 2) model.
I'm sure someone else will also respond to your post
in the NanoVNA group.

On Wed, 30 Sep 2020 at 23:49, Alan “W2AEW” Wolke <>

Alan “W2AEW” Wolke 2020/09/30 16:27

Yes, I realized I posted in the wrong group. I deleted the message, but I guess it got sent to anyone that is getting individual emails vs a digest. Sorry about that.

Dragan Milivojevic 2020/10/01 01:44

No worries :)
BTW hope you are documenting all this, it will be fun to watch ;)

On Thu, 1 Oct 2020 at 01:27, Alan “W2AEW” Wolke <>

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