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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What and where are mag(s21) and mag(s11)
Leif M 2025/03/18 12:10
I just updated the firmware to nanorfe-20250121-v2plus45.bin and decided to try the tests in https://nanorfe.com/nanovna-v2.html Measurement comparisons
I think S11 channel 0 is the return loss, but how can I get mag(s21). Where it is in menus. Is it measured with nothing connected to the VNA.
The NanoVna uses different names for the channels. Just a comment.
Leif M 2025/03/19 14:03
Probably a better question is, how can I repeat the measurements of this pictures
István 2025/03/20 10:21
Dear Leif M,
first two pics: NanoVna-QT software:
https://nanorfe.com/nanovna-v2-software.html
last one: NanoVna-Saver - maybe 1023 datapoints; - here is mine plus4 in same scale:
https://github.com/NanoVNA-Saver/nanovna-saver/releases
on the 3. pic looks to me some kind of , the H or H4 not go up to 3GHz.
You set the start, and stop frequency; first two pics: start from 200MHz 3. starts from 10 MHz last one; from 500MHz (end fq: 3GHz)
- the input noise measurements (dynamic); always with 50 Ohm termination; connect 50 Ohm load to the input (better if You connect both connector)
Istvan
Leif M 2025/03/21 13:49
Thank you all. My problem here is that Mag(s11) and Mag(s21) are not written anywhere on the NanoVNA V2 Plus4 screen. And I don't remember s-parameters too well.
István 2025/03/22 07:30
This will helps You:
https://groups.io/g/NanoVNAV2/files/The%20Missing%20Manual.pdf
Istvan
Leif M 2025/03/25 06:51
Thanks I found one which talked about SC cards and such. Too many version.
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