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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Input protector for the NanoVNA with the TVS diodes

OK1VAW 2021/10/14 14:29

Although I put the info on the Facebook too, maybe not all are there.
I have designed and tested a simple input ESD protector with TVS diodes. Details and measurement you can find here in the article:
https://www.qsl.net/.../NanoVNA%20input%20protector.pdf ( https://www.qsl.net/o/ok1vaw//protector/NanoVNA%20input%20protector.pdf?fbclid=IwAR3jtUNMJiZBeNrvFh4sciTE4_4vNSzYfC0jvH1q_nDp1cXzh7jSZUREGRw )
If you have any questions or proposal, feel free to ask.
BR,
OK1VAW Vojtech.

ploegmma 2021/10/15 00:38

Maybe you like the RF Power Snitch for protecting your nanoVNA: https://powersnitch.nickstick.nl/

Reinier Gerritsen 2021/10/15 10:15

I protected my nanovna V2.2 with a TVS diode: ESD101B102ELE6327XTMA1, a
5.5V TVS bi-directional diode from Infineon, 0.1 pF capacitance.
Soldered directly at the input on the pcb. I did not see any difference
in return loss matching.

Op 14-10-2021 om 23:29 schreef OK1VAW:

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