I'm about to buy a Nano VNA V2 Plus 4.  I know that Tindie is the 'official' seller but buying from them is expensive with courier fees and VAT etc.
I have just found a crop of Nano VNA V2 Plus 4 devices on Ebay UK that were not there a month ago.  I wonder if they are genuine - they certainly look the part superficially
.  Does anyone know?  Russ
https://www.ebay.co.uk/itm/203950588972?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200818143230%26meid%3D9340c4dce8c54a57b4cf5b88f8315093%26pid%3D101224%26rk%3D2%26rkt%3D5%26sd%3D203751480245%26itm%3D203950588972%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DDefaultOrganicWeb%26brand%3DUnbranded&_trksid=p2047675.c101224.m-1&amdata=cksum%3A2039505889729340c4dce8c54a57b4cf5b88f8315093%7Cenc%3AAQAHAAAA8Hfu33UHQ7b5PJ8ZY%252FcxAQAy1fWbT3Z7ggFRZkYJzqT1Cp7FIyh4P8c7IGN5KgZO6oCIb%252F1uSWMPJQW67WJmWRJ2xNesPLGDv09oLBKIaWWQHZT%252FZmgB6xNeTph1V2WB9xESsPoeY6l8WWD1%252FpSTCVWLBx25ciOo46X8FAS28L%252BTks9Wgjhx3yRXKWwK4vgeEi%252BatXmWQUW4w6B6qvSSZpDlAutzNQqztiC4GWdX%252FwCU8wzm5eJ5oXQyuyKQWj%252FPT66xTguzCuDDeOIGrRUWXcaYMlm%252BfEfC6fWXhp9QxVopXJCdLy6L2z91VpSlrvN8KA%253D%253D%7Campid%3APL_CLK%7Cclp%3A2047675&epid=28048568667#rwid

as far as i know there were no v2plus4 clones on the market so just look
for a cheap source

add newest fw from dislord for the plus4 ... and maybe some caps on the
power rails (to further lower the noise) and you will have a superb device

dg9bfc sigi

Am 27.05.2022 um 16:10 schrieb Russ G4SAQ:

> I'm about to buy a Nano VNA V2 Plus 4.  I know that Tindie is the
> 'official' seller but buying from them is expensive with courier fees
> and VAT etc.
> I have just found a crop of Nano VNA V2 Plus 4 devices on Ebay UK that
> were not there a month ago.  I wonder if they are genuine - they
> certainly look the part superficially
> .  Does anyone know?  Russ
> https://www.ebay.co.uk/itm/203950588972?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200818143230%26meid%3D9340c4dce8c54a57b4cf5b88f8315093%26pid%3D101224%26rk%3D2%26rkt%3D5%26sd%3D203751480245%26itm%3D203950588972%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DDefaultOrganicWeb%26brand%3DUnbranded&_trksid=p2047675.c101224.m-1&amdata=cksum%3A2039505889729340c4dce8c54a57b4cf5b88f8315093%7Cenc%3AAQAHAAAA8Hfu33UHQ7b5PJ8ZY%252FcxAQAy1fWbT3Z7ggFRZkYJzqT1Cp7FIyh4P8c7IGN5KgZO6oCIb%252F1uSWMPJQW67WJmWRJ2xNesPLGDv09oLBKIaWWQHZT%252FZmgB6xNeTph1V2WB9xESsPoeY6l8WWD1%252FpSTCVWLBx25ciOo46X8FAS28L%252BTks9Wgjhx3yRXKWwK4vgeEi%252BatXmWQUW4w6B6qvSSZpDlAutzNQqztiC4GWdX%252FwCU8wzm5eJ5oXQyuyKQWj%252FPT66xTguzCuDDeOIGrRUWXcaYMlm%252BfEfC6fWXhp9QxVopXJCdLy6L2z91VpSlrvN8KA%253D%253D%7Campid%3APL_CLK%7Cclp%3A2047675&epid=28048568667#rwid
> <https://www.ebay.co.uk/itm/203950588972?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200818143230%26meid%3D9340c4dce8c54a57b4cf5b88f8315093%26pid%3D101224%26rk%3D2%26rkt%3D5%26sd%3D203751480245%26itm%3D203950588972%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DDefaultOrganicWeb%26brand%3DUnbranded&_trksid=p2047675.c101224.m-1&amdata=cksum%3A2039505889729340c4dce8c54a57b4cf5b88f8315093%7Cenc%3AAQAHAAAA8Hfu33UHQ7b5PJ8ZY%252FcxAQAy1fWbT3Z7ggFRZkYJzqT1Cp7FIyh4P8c7IGN5KgZO6oCIb%252F1uSWMPJQW67WJmWRJ2xNesPLGDv09oLBKIaWWQHZT%252FZmgB6xNeTph1V2WB9xESsPoeY6l8WWD1%252FpSTCVWLBx25ciOo46X8FAS28L%252BTks9Wgjhx3yRXKWwK4vgeEi%252BatXmWQUW4w6B6qvSSZpDlAutzNQqztiC4GWdX%252FwCU8wzm5eJ5oXQyuyKQWj%252FPT66xTguzCuDDeOIGrRUWXcaYMlm%252BfEfC6fWXhp9QxVopXJCdLy6L2z91VpSlrvN8KA%253D%253D%7Campid%3APL_CLK%7Cclp%3A2047675&epid=28048568667#rwid>
>
>

Another place to check is aliexpress.com but trying to figure which is
genuine is really hard.

On Sat, 28 May 2022, 05:49 Russ G4SAQ, <g4saq@sent.com> wrote:

> I'm about to buy a Nano VNA V2 Plus 4. I know that Tindie is the
> 'official' seller but buying from them is expensive with courier fees and
> VAT etc.
> I have just found a crop of Nano VNA V2 Plus 4 devices on Ebay UK that
> were not there a month ago. I wonder if they are genuine - they certainly
> look the part superficially
> . Does anyone know? Russ
>
> https://www.ebay.co.uk/itm/203950588972?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200818143230%26meid%3D9340c4dce8c54a57b4cf5b88f8315093%26pid%3D101224%26rk%3D2%26rkt%3D5%26sd%3D203751480245%26itm%3D203950588972%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DDefaultOrganicWeb%26brand%3DUnbranded&_trksid=p2047675.c101224.m-1&amdata=cksum%3A2039505889729340c4dce8c54a57b4cf5b88f8315093%7Cenc%3AAQAHAAAA8Hfu33UHQ7b5PJ8ZY%252FcxAQAy1fWbT3Z7ggFRZkYJzqT1Cp7FIyh4P8c7IGN5KgZO6oCIb%252F1uSWMPJQW67WJmWRJ2xNesPLGDv09oLBKIaWWQHZT%252FZmgB6xNeTph1V2WB9xESsPoeY6l8WWD1%252FpSTCVWLBx25ciOo46X8FAS28L%252BTks9Wgjhx3yRXKWwK4vgeEi%252BatXmWQUW4w6B6qvSSZpDlAutzNQqztiC4GWdX%252FwCU8wzm5eJ5oXQyuyKQWj%252FPT66xTguzCuDDeOIGrRUWXcaYMlm%252BfEfC6fWXhp9QxVopXJCdLy6L2z91VpSlrvN8KA%253D%253D%7Campid%3APL_CLK%7Cclp%3A2047675&epid=28048568667#rwid
>
>

Hi,
What is the benefit of the caps on the power rail? Are there any instructions on how to do that?

Yet the recent article in QST on the V2plus4 states otherwise regarding
clones.

Chuck





On 5/28/2022 1:13 AM, Siegfried Jackstien wrote:

>
> as far as i know there were no v2plus4 clones on the market so just
> look for a cheap source
>
>

Genuine or Clone ???

Read the entire content of the OFFICIAL WEBSITE written by the creator >>>
https://nanorfe.com/nanovna-v2.html
[https://nanorfe.com/images/nanovna-v2-main2.jpg1zB]<https://nanorfe.com/nanovna-v2.html>
NanoVNA V2 Official Site<https://nanorfe.com/nanovna-v2.html>
NanoVNA V2 (S-A-A-2) is a vector network analyzer (VNA) capable of measuring antennas, filters, duplexers, and amplifiers. 4GHz operation without using harmonics - new from-scratch design by HCXQS/NanoRFE; Low temperature drift (V2 Plus4) - automatic internal calibration corrects for drift errors; High dynamic range: 90dB (V2 Plus4), achieves similar results as professional instruments; can ...
nanorfe.com
Specifically - read the sections >>>
"Beware of underperforming clones"
"FAQ"

Do Not Purchase from other than from Official Stores.

I purchased mine from Tindie. The ordering process was efficient and delivery was about three weeks.

The Official NanoVNA V2 Plus4 is an excellent product and works as described.

Read this document - thoroughly - before purchasing >>>
https://nanorfe.com/images/V2Plus4_Manual_NC4BR.pdf
WRITTEN BY BILL RUGGIRELLO, NC4BR EMAIL BAR NC BR GMAIL COM<https://nanorfe.com/images/V2Plus4_Manual_NC4BR.pdf>
INTRODUCTION Unless otherwise noted, any reference to “Nano”, or “NanoVNA” in this manual refers specifically to a NanoVNA V2 PLUS4 v2.4 with F/W version git-20201013-32077fd. “VNA” refers to a generic VNA. The goal of this document is to help beginners learn about and operate this amazing instrument,
nanorfe.com

My Opinion:
One can purchase for less and suffer the consequences.

Good Luck with your decision.

Best Regards,
Gary
***********

Thanks to all for your contributions.  It's always useful to hear what the community thinks.

maybe those pictures help a bit?!?

in fact a few caps on all rails but main thing is dirt from the display!!!

i made a few tests (including disconnect and reconnect display!!!)

picture names tell what i did ....

the v2plus4 has better filttering as v2 or saa2n ... so improvement can
be nothng ... or the holy grail (depending what unit you have)

greetz sigi dg9bfc

ps added caps lowers noise so you have exacter and finer sweeps

Am 28.05.2022 um 15:13 schrieb gouzou82@hotmail.com:

> Hi,
> What is the benefit of the caps on the power rail? Are there any
> instructions on how to do that?
>