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.

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NanoVNA V2_2 for audio range impedance measurement?

stevenkruyswijk 2025/04/05 03:24

Hi all,

Excuse me if this is a naive question with a highly obvious 'no' answer, but to make sure:

Is it possible at all to get even an estimate of DUT impedance in (part of) the audio range of 20Hz - 20kHz?

Thanks in advance, Steven

W0LEV 2025/04/06 15:44

This subject was addressed several months ago. You might check the
archives. Of course, the answer is "NO".

Dave - WØLEV

On Sun, Apr 6, 2025 at 8:01 AM stevenkruyswijk via groups.io
<stevenkruyswijk=gmail.com@groups.io> wrote:

> Hi all,
>
> Excuse me if this is a naive question with a highly obvious 'no' answer,
> but to make sure:
>
> Is it possible at all to get even an estimate of DUT impedance in (part
> of) the audio range of 20Hz - 20kHz?
>
> Thanks in advance, Steven
>
>
>

--

*Dave - WØLEV*

cocopuppy 2025/04/06 12:32

Probably not possible. Audio impedance is a lot higher than 50 ohms. I was thinking of up and down converting, but you would still need to transform the impedances and then calibrate it

An audio analyzer is probably you best bet



Frank

KA2FWC

David Bradley 2025/04/06 18:13

Well I must say this post has had a reply I've posted 3 times and not had
any replies

On Sun, 6 Apr 2025, 16:59 W0LEV via groups.io, <davearea51a=
gmail.com@groups.io> wrote:

- Show quoted text -
stevenkruyswijk 2025/04/06 23:14

Thanks - I did do a search for 'audio' but couldn't find any useful results.

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