开云体育

It is clear from some of the comments I have seen here, that different
people have different uses for the NanoVNA. I'm just trying to get some
idea of what percentage of people have such uses, as it dictates whether
internal firmware or external programs like Nano-Sharp are of primary
importance to them. It is also likely to affect the screen size they want.

1) Some, like myself, want to use the NanoVNA away from a laboratory or
radio shack - most likely outside working on feeders, antennas or similar,
but maybe with antennas in loft spaces or similar.

Such people are likely to want at least some of the following.
* Bigger better screens readable in bright light.
* Support in the *firmware* for decent calibration standards
* Support in the *firmware* for other features like time domain
reflectometry (TDR)
* Such people are less likely to be interested in the capabilities of
external software such as VNA-Savert.
* Rugged device, suitable for outside use.

Rune's NanoVNA-Saver looks a lovely bit of software, but it is not much
good unless you work outside, unless willing to take a PC worth you.

*Please understand, I'm not getting at Rune here. In fact, I've been
thinking about the possibilites of using his sofware with HP VNAs. I'm sure
virtually any data that can be taken from the NanoVNA, could probably be
taken from the HP VNAs. Anything that could not be obtained from the HP
VNAs, could probably be ignored. Of course, all the command would be
different, but I don't see that as a major problem. Most of the work is in
the GUI I believe. *

2) Others are likely to use the instrument mainly inside a shack or
laboratory. For them
* The capabilities of external software, like NanoVNA-Saver, will be *very*
important.
* Facilities like TDR, or good calibration facilities in the firmware are
lunikely to be important, as external software can do this on a large
screen.
* NanoVNA screen size is possibly less importance, as being able to read
the screen outside clearly is no that imporant.

3) Some might be a mix of the two. In what case, what percentage of time do
you consider using the NanoVNA in such of the environments?

--
Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD,
Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892

Tel 01621-680100 / +44 1621-680100

Hi John AE5X -

Are the main (only?) differences in the -F that it has a 100 MHz higher upper
frequency limit and a bigger display?

No, it has an incompatible processor that may support more/different functionality.
Please check out and/or /g/nanovna-f

Hi Larry -

the following two links ONLY work with Chrome browser

Oops, I forget that hover tooltips fail for touchscreens,
but the second URL should work..

how do you access the client on your tablet?

Hi Dwight,
thanks for trying out the software!

The calibration save/load functions are probably changing in the next
release, and will have OS-provided file picker dialogues, so it should be a
*lot* easier to find the file you want.

Formatting for frequencies is a good idea. I'm still internally debating
how to do it properly: Thousands separators, scientific notation (9e8 for
your example?) or trying something that works with G/M/k (900M is easy, but
123,456,789 represented as 123.456789MHz is ... less nice.)

Thank you for the suggestions, keep them coming! :-)

--
Rune / 5Q5R

oristo -
Thanks for the Wiki post but please change the description to:
" Simple, but the following two links ONLY work with Chrome browser "

Personally, I got it to work on my LG G3 8" tablet that has TWO USB ports - one Client and one dedicated Host.
I'll have to try it on my Chinese Android phone.

Regards,
Larry

Hi Rune,

First let me thank you for sharing your excellent nanoVNA-Saver application!
Your time and efforts are appreciated.

A couple of suggestion for possible future improvement...

Would it be possible to add some number formatting to make it easier to read the various frequencies and other values?
ie. instead of 900000000, this is much easier to read 900,000,000
for me it really doesn't matter if you use a comma or a space or a dot (9 000 000 vs 9.000.000 or 9,000,000 etc, etc)
I find it difficult to quickly and accurately evaluate the numbers without some sort of delimiter to help visually.


In the calibration section there does not seem to be a way to specify a folder location for the calibration files.
It is a bit tedious to remember what names the user might have used to save each calibration so it would be helpful if one could list the available calibration files that have been saved.

These are just a couple of suggestions.
Mostly I want to thank you for sharing your work!

73
Dwight
N7KBC

On Mon, Sep 30, 2019 at 03:49 PM, Alan Lloyd wrote:

Hmm. So why buy one if you don't know what it is or what it does?
A

That's exactly the reason to get one. At $50-ish, the NanoVNA is far more than a piece of test gear - it's a learning tool. He'll learn more by having and using it than he will by reading and YouTubing about VNAs.

- (c) gin&pez@arg (cc-by-4.0) 2019 : start -

24 : The Main Frame of a Possible Communication

There are three 3 Worlds.

The Physical World: Phenomena involving objects
which are created, existed, and destroyed.

The Subjective World: In order to explain and predict
the phenomena : Personal Ideas in correspondence
with those of the Physical World : objects with properties,
in relations, created, existed and destroyed.

The Objective World: The Common Sharable Subjective
World among more than one people.

Sincerely,

gin&pez@arg

- end : (c) gin&pez@arg (cc-by-4.0) 2019 -

23

Are the main (only?) differences in the -F that it has a 100 MHz higher upper frequency limit and a bigger display?

Hi

If there will be free pins left on the MCU run them to a row of SIL holes at the edge of the digital PCB. Then they may be used for something else later on e.g. external keypad or other I/O. I could also imagine that for lab use, and built into a different enclosure, a row of buttons could come in handy.

Bo

Certainly,?
Please see the attachment.
Mike WY6K


"... somewhere in the distance, there's a tower and a light, broadcastin' the resistance, through the rain and through the night..."

Hi everyone,
I'm working on NanoVNA-Saver 0.1.0, and with the number of users we're up
to now, I think it's probably best to try to release slightly more stable
code than has previously been the norm.

To that end, I intend to release an "alpha version", the purpose of which
is to get your feedback *primarily* on "things that do not work", and not
as much on new features. I will then focus for a few days on stability, and
then start work on the next features after the "proper" release.

If you want to be included in the list of people who test these alpha
versions for bugs, please send me an email direct at mihtjel@...

For the rest of you: I'm not taking away or hiding anything for you; but
I'm going to start delaying new releases for a few days to avoid the crash
bugs that sometimes occur, such as what's in 0.0.12 if a band ending (but
not the beginning) happens to be in a sweep. ;-) All code will still be on
GitHub.

--
Rune / 5Q5R

Hi David
Can you please post a link to where you got it from,
Thanks Dave 2E0DMB
=====================================

Dave:

It was:



Oristo:

I posted on this group as I know there is an interest in the larger screen display - the unique feature of the -F variant. I am aware of the other group. Perhaps it might actually be better if there were just one group, as 90% or more of the discussions (firmware, PC software, calibration etc.) are actually in common.

73,
David GM8ARV
--
SatSignal Software - Quality software for you
Web:
Email: david-taylor@...
Twitter: @gm8arv

I added Web-Client launch instructions in the Wiki
/g/nanovna-users/wiki/Home

FWIW, Web-Client works with STMicroelectronics' driver on Windows 8.1 64-bit Home
and Chrome browser thru a USB 2.0 port to nanoVNA with original firmware.

For Android devices that work with powered USB 2.0 hubs, this might help:

Hi Nigel,

I would like a simpler approach to repair.
The nanoVNA saver also works under Windows 7. A prerequisite for this is that you have SP1 and Ms VC ++ installed.
You can then start nanovna-saver-0.0.12.exe from Windows.

If you want to access the nanovna saver by installing Python, make sure to check the PATH path when installing Python - and install it in the Program Files folder (not in the Users /.../../../ folder) ). Then install the required pyqt5, numpy, pyserial from the Windows command line using pip3 install .... You can verify the installation by calling the Python 3.7 Module Docs server on your browser page.

I unpacked the contents of the nanovnasaver master downloaded from github into the C: root directory. You can start the program with nanovna-saver.py.
If not missed something, it should work. I hope it works for you.

Gyula

Hi David
Can you please post a link to where you got it from,
Thanks Dave 2E0DMB

My NanoVNA-F arrived today

Since NanoVNA-F has its own group, GitHub and videos,
while this group is already quit busy,
[with too many messages lacking clear context
and/or generous with redundant content]
please consider further discussion NanoVNA-F only there:
/g/nanovna-f

You're welcome Nigel - I look forward to seeing what's gone wrong this time
;-)

--
Rune / 5Q5R

My NanoVNA-F arrived today and I'm looking forward to playing with it. It's slightly smaller than a Google Pixel 3 phone (which isn't the biggest model), although somewhat thicker of course.

UK buyers might like to know that it escaped duty, tax, collection fee etc.

Cheers,
David
--
SatSignal Software - Quality software for you
Web:
Email: david-taylor@...
Twitter: @gm8arv

Checking the Windows device driver properties shows nanovna to be using ChibOS/RT Virtual Com port and Windows recognizes device being attached / removed.

You could replace that driver with this:


Virtual COM port operation to nanoVNA can be confirmed using .e.g putty.exe


I don't bother with a .msi installer; the standalone .exe works fine.

Try sending `help` from putty:
/g/nanovna-users/wiki/shellcommands

Nanovna-Saver uses pyqt5, which can be separately tested:

`python -m serial.tools.list_ports`
COM3
1 ports found

NanoVNA USB driver is STMicroelectronics Virtual COM Port 8/2/2013 1.4.0.0