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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Click here to join and see most recent posts.

QEX


Bob W0EG 2023/07/03 13:39

Just received my new issue of QEX and it has a very good short article on
the Nano VNA. QST also has a review. If you are an ARRL member you can
view and copy "Self-Paced Essays -#18 Vector Network Analyzer" by Eric P.
Nicholed, KL7AJ. If you don't have access, see if you can find a ham
friend who can download a copy for you.

Raj vu2zap 2023/07/04 17:14

I have seen a review in QEX Jan/Feb 2020 by Dr. George R. Steber, WB9LVI.

Raj, vu2zap

On 03/07/2023 11:09 PM, Bob W0EG wrote:

cocopuppy 2023/07/04 10:26

Do you know what month the QST article was?

Thanks

Frank

KA2FWC

Bob W0EG 2023/07/04 13:34

April 2022. I thought there was one this year also but perhaps not.

On Tue, Jul 4, 2023 at 12:58 PM cocopuppy <cocopuppy@bellsouth.net> wrote:

Mike C. 2023/07/05 13:01

Wanna try again? Here's the QST 4-22, show me:

Mike C. Sand Mtn GA

On 7/4/2023 1:34 PM, Bob W0EG wrote:

Raj vu2zap 2023/07/06 11:29

Try page 41 product review!!

Raj

On 05/07/2023 10:31 PM, Mike C. wrote:

Jim Lux 2023/07/06 06:21

On 7/5/23 10:01 AM, Mike C. wrote:
> Wanna try again? Here's the QST 4-22, show me:
>
page 41?

Bob W0EG 2023/07/06 10:26

*Page 41 Product Reviews NanoVNA V2 Plus 4 *

Contents April 2022  Volume 106  Number 4 30 60 75 63 38 9 41 40 78 87
76 34 66
Second Century The Excitement is Back! Radial Configurations for Elevated
Four-Square Arrays Al Christman,
K3LC An Improved DSP Audio Filter Grant Zehr, AA9LC, and Scott Zehr,
K9GKC A Potato-Powered Transceiver Hiroki Kato,
AH6CY The Better Antenna: Copper Versus Aluminum Pete Varounis,
NL7XM Product Review Pascal Villeneuve, VA2PV Yaesu FT5DR VHF/UHF
Analog/Digital Transceiver;
*NanoVNA V2 Plus4 50 kHz – 4 GHz Two-port Vector Network Analyzer*;
M5Stack Open-Source Development Kit

On Thu, Jul 6, 2023 at 12:58 AM Mike C. <mg@mgte.com> wrote:

Mike C. 2023/07/06 13:23

Hey Bob,

The Apr 2022 does NOT have that article. Could it be in another QST
issue and if so, which?

Mike C. Sand Mtn GA

On 7/3/2023 1:39 PM, Bob W0EG wrote:

Fabrice FRANCOISE 2023/07/06 19:29

Bonjour / hi

Comment tester une antenne fd4 avec son câble , l antenne est sur le toit

Please, how testing an antenne with câble,
Antenne us on the roof

F4 EMT France / paris


Le jeu. 6 juil. 2023 à 19:13, Bob W0EG <morrisnc7@gmail.com> a écrit :

Bob W0EG 2023/07/06 14:16

That’s what it says in the table of contents page you sent. Multiple
reviews so the NanoVNA may be a few pages later. Read what you sent.
On Thu, Jul 6, 2023 at 1:13 PM Jim Lux <jimlux@earthlink.net> wrote:

Anne Ranch 2023/07/06 15:49

I was going to ask just the original poster, but I am messing with my
system and got stuck.
With , in MY OPINION , general decline in interest in technical stuff
in this hobby - is it worth to subscribe "to get NEW QEX" ?
I was under the impression that older QEX issues are on the net - somewhere...

Bob W0EG 2023/07/07 08:17

Any ARRL member can download the digital additions of any of the four ARRL
magazines each month. Or download only selected pages. I don’t know if we
have access to the full archive of back issues. You get a choice of one
print magazine with ARRL membership and can add additional print editions
for an extra fee. I get print QST and QEX (the technical magazine). The
other two are aimed contesters a beginners. You can’t just subscribe
without a membership.

If you are not a ham then ask a ham friend to download for you. If you are
a licensed amateur radio operator and not an ARRL member then consider
joining. They are the only organization the lobbies on our behalf to
protect our frequencies and privileges. There is constant pressure from
the cellular industry and others to take away our bands.

On Fri, Jul 7, 2023 at 2:14 AM Anne Ranch <anneranch2442@gmail.com> wrote:

Dave (NK7Z) 2023/07/07 06:20

Hello,
If you like tech, QEX is your magazine... It is, for the most part,
like the old QST used to be, filled with theory, and practice
articles... If I had to take only one ARRL magazine, it would be QEX.

I tend to agree with you with regards to the lack of tech love in the
hobby of late...

Page 35 of the current QEX has a nice article on the VNA... It is not
titled as such, it is under the "Self paced essays" section.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 7/6/23 13:49, Anne Ranch wrote:

Bob W0EG 2023/07/07 09:27

Mike, Yes, it is in the April 2022 issue, two pages, 46 and 47. Also
listed in the table of contents.

On Fri, Jul 7, 2023 at 2:14 AM Mike C. <mg@mgte.com> wrote:

cocopuppy 2023/07/07 09:51

It starts on Page 46 of April 22. My friend found and sent me a “clipping”

http://edition.pagesuite.com/html5/reader/get_clipping.aspx?edid=71934646-48a8-4d70-b51c-122e445a870c <http://edition.pagesuite.com/html5/reader/get_clipping.aspx?edid=71934646-48a8-4d70-b51c-122e445a870c&pnum=52&time=20230706185821074> &pnum=52&time=20230706185821074

Michael Cheponis 2023/07/07 09:55

As for 'tech love' in ham radio, I don't think it has declined at all.
Sure the venerable 'Ham Radio' magazine is long gone
https://worldradiohistory.com/Ham_Radio.htm however, QEX does a decent
job of pulling good tech together. And DUBUS magazine http://www.dubus.org/
is just amazing in the microwave world.

There are other non-USA pubs that are pretty good, Here for example is a
sample issue of RSGB's RADCOM:
https://rsgb.org/main/publications-archives/radcom/sample-radcom/

There is a flurry of online tech info, especially on digital modes
https://sumterdigitalgroup.com/digital-modes/

There is work on new HF/VHF codecs: https://freedv.org/

I could go on for many more pages. My point is that, sure, maybe you don't
get a perfect replica of "Ham Radio Magazine" in the mail each month,
however, that and much more is available to today's hams with a little bit
of poking around.

GL, es 73,
Mike K6THZ
(I have one of every NanoVNA, and have gifted to others all but one)


On Fri, Jul 7, 2023 at 9:30 AM Dave (NK7Z) <dave@nk7z.net> wrote:

Dave (NK7Z) 2023/07/08 05:36

Morning Mike,

Respectfully, there will always be examples of tech, and examples of non
tech, that we can throw around. My point is, that most of the newer,
(last 30 or so years), hams are not as technically oriented as Amateurs
were when I was in my 20's or 30's, which was 40 years ago.

The proliferation of grab-n-go radios, publishing the question pools,
and in general, the lack of understanding for basic physics, has allowed
many folks to get involved, where as in the past, (30 to 40 years ago),
you had to have a fairly broad technical understanding, to even get on
the air. Not to say there were not exceptions to this, I am talking in
general here.

This is neither a good nor a bad development, but it is a fact, the
level of technical expertise, of the average Amateur operator, is far
less than it was 30 years ago. Technical expertise being defined as
moving wires, understanding why things work, and using parts the allow
electrons to flow through them.

On the other hand, there are far more newer folks, that are far better
at programming, and the use of computers than the older folks are now...

It is all in how one defines technical. Us old guys define it as
working directly with electrons, the newer folks define it as working
with code, etc.

But make no mistake about it-- there is a schism that has developed
between the new and the old tech folks, (as defined above), and the
average Amateur...

The real issue is that the hobby is dominated by older folks like
myself, who grew up with soldering iron in hand, which gives us our
definition of technical.

The newer technical savvy folks, on the other hand, could say the same
thing about the older folks, where computers are involved. On average
the newer folks know far more about computers than on average, the older
folks do... Again, it always boils down to what is ones definition of
technical knowledge.

I have strayed far off topic here...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 7/7/23 09:55, Michael Cheponis wrote:

synergy124 2023/07/09 07:20

Too true.
One is not really a "ham" unless and until he/she builds his/her own gear, at least initially.

Other than that one is merely an appliance operator.
Best 73's to all
Phil VK6RE/LZ1

+

On Saturday, 8 July 2023 at 07:29:03 pm GMT+3, Dave (NK7Z) <dave@nk7z.net> wrote:

Morning Mike,

Respectfully, there will always be examples of tech, and examples of non
tech, that we can throw around.  My point is, that most of the newer,
(last 30 or so years), hams are not as technically oriented as Amateurs
were when I was in my 20's or 30's, which was 40 years ago.

The proliferation of grab-n-go radios, publishing the question pools,
and in general, the lack of understanding for basic physics, has allowed
many folks to get involved, where as in the past, (30 to 40 years ago),
you had to have a fairly broad technical understanding, to even get on
the air.  Not to say there were not exceptions to this, I am talking in
general here.

This is neither a good nor a bad development, but it is a fact, the
level of technical expertise, of the average Amateur operator, is far
less than it was 30 years ago.  Technical expertise being defined as
moving wires, understanding why things work, and using parts the allow
electrons to flow through them.

On the other hand, there are far more newer folks, that are far better
at programming, and the use of computers than the older folks are now...

It is all in how one defines technical.  Us old guys define it as
working directly with electrons, the newer folks define it as working
with code, etc.

But make no mistake about it-- there is a schism that has developed
between the new and the old tech folks, (as defined above), and the
average Amateur...

The real issue is that the hobby is dominated by older folks like
myself, who grew up with soldering iron in hand, which gives us our
definition of technical.

The newer technical savvy folks, on the other hand, could say the same
thing about the older folks, where computers are involved.  On average
the newer folks know far more about computers than on average, the older
folks do...  Again, it always boils down to what is ones definition of
technical knowledge.

I have strayed far off topic here...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 7/7/23 09:55, Michael Cheponis wrote:

Tom W8JI 2023/07/09 12:19

There are all levels of Hams, just as there are all levels in any hobby
or profession.  Almost all contribute in some way.

I knew several Hams who were either prolific builders and/or authors and
didn't understand basics at all. One authored a popular Handbook that
was almost entirely things he collected from other people. Another ran a
popular amplifier/tuner company and "designed" all kinds of things by
cut and try but didn't even know Ohm's law or how a tank circuit
worked.  Another wrote a lot of QEX and Communications Quarterly stuff
but couldn't tell you how to bias a transistor.

I also knew/know people who never built a thing or wrote an article who
are/were brilliant and add a great deal.

We have to be careful setting meaningless bars.

73 Tom

On 7/9/2023 3:20 AM, synergy124@yahoo.com via groups.io wrote:
> Too true.
>
> One is not really a "ham" unless and until he/she builds his/her own
> gear, at least initially.
>
> Other than that one is merely an appliance operator.
>
> Best 73's to all
>
> Phil VK6RE/LZ1
>
> +
>
> On Saturday, 8 July 2023 at 07:29:03 pm GMT+3, Dave (NK7Z)
> <dave@nk7z.net> wrote:
>
>
> Morning Mike,
>
> Respectfully, there will always be examples of tech, and examples of non
> tech, that we can throw around.  My point is, that most of the newer,
> (last 30 or so years), hams are not as technically oriented as Amateurs
> were when I was in my 20's or 30's, which was 40 years ago.
>
> The proliferation of grab-n-go radios, publishing the question pools,
> and in general, the lack of understanding for basic physics, has allowed
> many folks to get involved, where as in the past, (30 to 40 years ago),
> you had to have a fairly broad technical understanding, to even get on
> the air.  Not to say there were not exceptions to this, I am talking in
> general here.
>
> This is neither a good nor a bad development, but it is a fact, the
> level of technical expertise, of the average Amateur operator, is far
> less than it was 30 years ago.  Technical expertise being defined as
> moving wires, understanding why things work, and using parts the allow
> electrons to flow through them.
>
> On the other hand, there are far more newer folks, that are far better
> at programming, and the use of computers than the older folks are now...
>
> It is all in how one defines technical.  Us old guys define it as
> working directly with electrons, the newer folks define it as working
> with code, etc.
>
> But make no mistake about it-- there is a schism that has developed
> between the new and the old tech folks, (as defined above), and the
> average Amateur...
>
> The real issue is that the hobby is dominated by older folks like
> myself, who grew up with soldering iron in hand, which gives us our
> definition of technical.
>
> The newer technical savvy folks, on the other hand, could say the same
> thing about the older folks, where computers are involved.  On average
> the newer folks know far more about computers than on average, the older
> folks do...  Again, it always boils down to what is ones definition of
> technical knowledge.
>
> I have strayed far off topic here...
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
>
> On 7/7/23 09:55, Michael Cheponis wrote:
> > As for 'tech love' in ham radio, I don't think it has declined at all.
> > Sure the venerable 'Ham Radio' magazine is long gone
> > https://worldradiohistory.com/Ham_Radio.htm
> > <https://worldradiohistory.com/Ham_Radio.htm>   however, QEX does a
> > decent job of pulling good tech together.  And DUBUS magazine
> > http://www.dubus.org/ <http://www.dubus.org/> is just amazing in the
> > microwave world.
> >
> > There are other non-USA pubs that are pretty good,  Here for example is
> > a sample issue of RSGB's RADCOM:
> > https://rsgb.org/main/publications-archives/radcom/sample-radcom/
> > <https://rsgb.org/main/publications-archives/radcom/sample-radcom/>
> >
> > There is a flurry of online tech info, especially on digital modes
> > https://sumterdigitalgroup.com/digital-modes/
> > <https://sumterdigitalgroup.com/digital-modes/>
> >
> > There is work on new HF/VHF codecs: https://freedv.org/
> > <https://freedv.org/>
> >
> > I could go on for many more pages.  My point is that, sure, maybe you
> > don't get a perfect replica of "Ham Radio Magazine" in the mail each
> > month, however, that and much more is available to today's hams with a
> > little bit of poking around.
> >
> > GL, es 73,
> > Mike K6THZ
> > (I have one of every NanoVNA, and have gifted to others all but one)
> >
> >
> > On Fri, Jul 7, 2023 at 9:30 AM Dave (NK7Z) <dave@nk7z.net
> > <mailto:dave@nk7z.net>> wrote:
> >
> >    Hello,
> >    If you like tech, QEX is your magazine...  It is, for the most part,
> >    like the old QST used to be, filled with theory, and practice
> >    articles...  If I had to take only one ARRL magazine, it would be
> QEX.
> >
> >    I tend to agree with you with regards to the lack of tech love in the
> >    hobby of late...
> >
> >    Page 35 of the current QEX has a nice article on the VNA...  It
> is not
> >    titled as such, it is under the "Self paced essays" section.
> >
> >    73, and thanks,
> >    Dave (NK7Z)
> > https://www.nk7z.net <https://www.nk7z.net>
> >    ARRL Volunteer Examiner
> >    ARRL Technical Specialist, RFI
> >    ARRL Asst. Director, NW Division, Technical Resources
> >
> >    On 7/6/23 13:49, Anne Ranch wrote:
> >      > I was going to ask just the original poster, but I am messing
> with my
> >      > system and got stuck.
> >      > With , in MY OPINION , general decline in interest in
> technical stuff
> >      > in this hobby - is it worth to subscribe "to get NEW QEX" ?
> >      > I was under the impression that older QEX issues are on the net -
> >    somewhere...
> >      >
> >      >
> >      >
> >      >
> >      >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
>

--
This email has been checked for viruses by AVG antivirus software.
www.avg.com

Anne Ranch 2023/07/09 12:46

Having been "amateur radio" hobyist since 6th grade ( build my own
crystal radio with cat whiskers ...) and being paid as a "computer
programmer " since 1979 I would put myself into "old fart radio
amateur" group . ( I am deliberately avoiding term "ham" ) With that
introduction - computer programming used to be called "art" , same as
"laying out printed circuit board " was called "doing artwork" - in my
opinion - neither no longer "requires" artistic skills - it has all
been all invented and nowaday only skill required is
"know how to turn computer on / off" . Despite all "hams" who are
impressed with "growing membership' ' I agree that the majority of
"new members " barely qualify even as "appliance operators" , just
"hams".
Your mileage / opinion will certainly vary...
...over and out...

Dave (NK7Z) 2023/07/10 01:54

Hence why I set at least two bars, computer use, and parts use... It
all boils down to what one defines as technical.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 7/9/23 09:19, Tom W8JI wrote:

Bob W0EG 2023/07/10 10:46

Wow, this trend has gotten away from the NanoVNA. Final comment: lots of
new technical to explore. Check out FreeDV, balloons, the several new
offshoots of FT8.

Bob
W0EG

On Mon, Jul 10, 2023 at 10:28 AM Dave (NK7Z) <dave@nk7z.net> wrote:

Mike C. 2023/07/11 23:55

In fact it DOES go way back to people who are singularly "trained." Back
in the early 80's I was at a NASA 'show-n-tell' symposium, marveling at
a 50' space parabolic antenna that weighed 34 lbs and fit into a 2' x 1'
space. The engineer who developed it was present and answered ALMOST all
my questions. I had asked about gain, material, focusing, etc.. When it
came to the feed line, I lost him. Seems these guys know a lot about
their one specific project and NOTHING else. Sort of like the
'appliance' operators of today.

And no I am not a ham/radio operator/or whatever you want to call them,
never had time. Too busy w/IR detecting and 155mm bullets at APG along
with the Hawk Radar. Now that was a lot of fun.

Mike C. Sand Mtn GA


On 7/9/2023 1:46 PM, Anne Ranch wrote:

W4JDY1953_G 2023/07/12 16:37

Exactly what I experience when we in the DoD engage a FFRDC like MITRE or university – experts are of limited and often no practical value.



W4JDY

salvatoreterress 2023/07/13 21:03

The matter is actually simpler and may be applied in general.
Since  we live in digital  age - there are TWO basic approaches to
"resolve" any  life   problems
technical way - use knowledge and experience to resolve the issue
managerial way - fire the source of trouble  (maker)  or buy a new one

W4JDY1953_G 2023/07/14 08:39

Concur.

Further, in terms of training young people for the military, this is so evident as they are Users with little to no technical background or knowledge.

FT8 appeals to them as the internet does - point and click and the rest is on auto.

W4JDY

Mike C. 2023/08/03 11:14

*Hi Group,*

*Just a quick question (and I've already looked). Is there a group or
going to be a group for the "tinyPFA?" (I just bought one from the
Neterlands for $102.70USD shipped)
*

*Mike C. Sand Mtn. GA
*

David J Taylor 2023/08/04 07:48

On 03/08/2023 16:14, Mike C. wrote:
> *Hi Group,*
>
> *Just a quick question (and I've already looked). Is there a group or going to
> be a group for the "tinyPFA?" (I just bought one from the Neterlands for
> $102.70USD shipped)
> *
>
> *Mike C. Sand Mtn. GA*

The PFA was an NanoVNA-H 4, but with different firmware. I don't know if
there's any difference with what is now being shipped.

David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv

István 2023/08/04 00:02

As far as I know, it doesn't have its own group, but PFA questions tend to arise here: https://groups.io/g/tinysa/topics

Better yet, you can get it directly from the developer: Erik Kaashoek answers to your questions.

Istvaan

On Fri, Aug 4, 2023 at 07:00 AM, Mike C. wrote:

Guido ON7CH 2023/08/04 10:36

Hi Mike,

Hereby the url of the tinyPFA home page with the link to Support Group.

https://www.tinydevices.org/wiki/pmwiki.php?n=TinyPFA.Homepage

Regards
Guido

On Fri, Aug 4, 2023 at 7:00 AM Mike C. <mg@mgte.com> wrote:

Vladimir Lebedev 2023/08/04 08:04

Hello Mike!
Here is for You:
https://www.tinydevices.org/wiki/pmwiki.php?n=TinyPFA.Homepage
73 de Vladimir, dl7pga

Mike C. 2023/08/08 23:14

Thanks guys.

Mike C. Sand Mtn GA

On 8/4/2023 11:04 AM, Vladimir Lebedev wrote:

Mike C. 2023/08/28 13:27

Thanks Guido, still sorting through my 400msgs. Yes, I finally got to
the PFA forum and getting locked in, though there is not much activity.

Mike C. Sand Mtn GA

On 8/4/2023 4:36 AM, Guido ON7CH wrote:

To reply to this topic, join https://groups.io/g/NanoVNAV2

View this thread on groups.io