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How exactly do I change the PyQT restriction? I'm computer literate, but not familiar with Python at all.
The original install instructions I found didn't have that step, so I'm wondering if that isn't my problem. Here's the error:

Processing /Users/lynn/nanovna-saver
Preparing metadata (setup.py) ... done
Collecting pyserial>=3.5
Using cached pyserial-3.5-py2.py3-none-any.whl (90 kB)
Collecting PyQt5>=5.15.0
Using cached PyQt5-5.15.6.tar.gz (3.2 MB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
Preparing metadata (pyproject.toml) ... error
error: subprocess-exited-with-error

× Preparing metadata (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [29 lines of output]
Traceback (most recent call last):
File "/opt/homebrew/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 156, in prepare_metadata_for_build_wheel
hook = backend.prepare_metadata_for_build_wheel
AttributeError: module 'sipbuild.api' has no attribute 'prepare_metadata_for_build_wheel'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/opt/homebrew/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 363, in <module>
main()
File "/opt/homebrew/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 345, in main
json_out['return_val'] = hook(**hook_input['kwargs'])
File "/opt/homebrew/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 160, in prepare_metadata_for_build_wheel
whl_basename = backend.build_wheel(metadata_directory, config_settings)
File "/private/var/folders/5c/_kgrrymn4hx0glzk2g84ysrh0000gn/T/pip-build-env-jodshyjo/overlay/lib/python3.9/site-packages/sipbuild/api.py", line 51, in build_wheel
project = AbstractProject.bootstrap('pep517')
File "/private/var/folders/5c/_kgrrymn4hx0glzk2g84ysrh0000gn/T/pip-build-env-jodshyjo/overlay/lib/python3.9/site-packages/sipbuild/abstract_project.py", line 83, in bootstrap
project.setup(pyproject, tool, tool_description)
File "/private/var/folders/5c/_kgrrymn4hx0glzk2g84ysrh0000gn/T/pip-build-env-jodshyjo/overlay/lib/python3.9/site-packages/sipbuild/project.py", line 594, in setup
self.apply_user_defaults(tool)
File "project.py", line 63, in apply_user_defaults
super().apply_user_defaults(tool)
File "/private/var/folders/5c/_kgrrymn4hx0glzk2g84ysrh0000gn/T/pip-build-env-jodshyjo/overlay/lib/python3.9/site-packages/pyqtbuild/project.py", line 70, in apply_user_defaults
super().apply_user_defaults(tool)
File "/private/var/folders/5c/_kgrrymn4hx0glzk2g84ysrh0000gn/T/pip-build-env-jodshyjo/overlay/lib/python3.9/site-packages/sipbuild/project.py", line 241, in apply_user_defaults
self.builder.apply_user_defaults(tool)
File "/private/var/folders/5c/_kgrrymn4hx0glzk2g84ysrh0000gn/T/pip-build-env-jodshyjo/overlay/lib/python3.9/site-packages/pyqtbuild/builder.py", line 67, in apply_user_defaults
raise PyProjectOptionException('qmake',
sipbuild.pyproject.PyProjectOptionException
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.
WARNING: There was an error checking the latest version of pip.

so then, try calibrating from the saver program... and if it crashes, try first to calibrate from the device itself? :)

Hello, I was using NanoVNASaver yesterday afternoon, successfully without any problems. I went to have dinner, using my laptop to document my work in PowerPoint. I came back home in the evening, fired up NanoVNASaver and the attached PNG file shows how NanoVNASaver crashed. I've tried:
1. rebooting my computer
2. reinstalling the software (multiple times, including both x86 and x64 versions
3. running Glary Utilities to "clean" up my computer (see attached JPG)

Below is some configuration information that may be of help to diagnose the problem. Any help is welcome; thank you.

Curt / K7ZOO

Device name K7ZOO-Laptop
Processor Intel(R) Core(TM) i5-3437U CPU @ 1.90GHz 2.40 GHz
Installed RAM 8.00 GB (7.87 GB usable)
Device ID D7CB3BD7-FF60-4AF6-A8E9-09C85638DFDC
Product ID 00330-80000-00000-AA471
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display

Edition Windows 10 Pro
Version 21H2
Installed on ?1/?23/?2021
OS build 19044.1706
Experience Windows Feature Experience Pack 120.2212.4170.0

Hi All, This afternoon I was succesfully using my NanoVNA H4 with NanoVNA Saver -- no problems. After working over dinner in PowerPoint on some documentation I came back home, tried to fire up NanaVNA Saver -- and it immediately crashed. Please see attached PNG file to see details. Any constructive advice is welcome! Thank you, Curt

EMPIRICAL DATA
a) I've run NanoVNA Saver as Admin and non-Admin; same crash
b) Crash occurs with NanoVNA disconnected and connected
c) I can see the NanoVNA in the Device Manager on COM port 8

COMPUTER CONFIGURATION DATA
Device name K7ZOO-Laptop
Processor Intel(R) Core(TM) i5-3437U CPU @ 1.90GHz 2.40 GHz
Installed RAM 8.00 GB (7.87 GB usable)
Device ID D7CB3BD7-FF60-4AF6-A8E9-09C85638DFDC
Product ID 00330-80000-00000-AA471
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display

Edition Windows 10 Pro
Version 21H1
Installed on ?1/?23/?2021
OS build 19043.1645
Experience Windows Feature Experience Pack 120.2212.4170.0

I accidently transmitted 12w into my connected nanovna and caused some damage to the software or components, not sure but it cannot read SWR any longer. It still uploads firmware etc but does not function as it did in the past.
Is it possible to replace the entire main board with a new board?
where can I get that replacement pls

I suspected as much. Best to have a known length of the cable to be measured. Then one can get the actual VF. Thanks, Stan.

Brian D
KF6BL

Roger:
Bingo!
I used the wrong .dfu.
Downloaded -H4 and I am back in business.
I owe you big time.
Thanks for all your help.
Fred
WD9HNU

On Mon, May 23, 2022 at 07:25 AM, Fred Piering wrote:

Fred,

Are you sure you are using the correct DFU file for the -H4? If you use the -H you will get a black screen.

You need to use the "Upgrade" button NOT "Upload". This is a common error. Check the "Verify after download" box and it will check that the firmware was written to flash correctly.

Roger

Hello Igor:
Thank you for the comprehensive video.
I performed the task as you showed, with the latest dfu file.
It appeared to function as your video showed.
However, I am still left with a black screen after disconnecting and reapplying power.
Fred

IMO, this would be stupidly cheap if it wasn't for the fact that the other nanoVNAs are so ridiculously cheap. Check the price of any way less capable graphical antenna analyzer for comparison. Even the archaic analog MFJ-259 is $350. Of course this is competing with those other amazingly capable ridiculous cheap nanoVNAs, so the question becomes are the features/benefits worth it to you.

On 23/05/2022 01:32, Roger Need via groups.io wrote:

Attached are some photos showing what you get in the box and what it looks like inside.

What I find disappointing is that it does not come with an N connector calibration kit. Inside it uses a SMA to N connector adapter and then an N Connector to SMA adapter and SMA cal loads are used. This is not great because the cal is now done through two adapters.

Roger,

Many thanks for your comments, links, and photos. I completely agree about the
calibration kit, although I'm more likely to be using it with SMA devices most
of the time. The dynamic range limitations aren't surprising, and even on a
professional VNA you are likely to need reduced bandwidth, slow scans, and
averaging to optimise the dynamic range.

Closed-source firmware and dedicated software is disappointing, but not a deal
killer for me, providing that bugs are fixed. Noted the ML&S reported
problems, but they are being addressed.

I appreciate your input.

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

On 22/05/2022 20:32, Chris Gardner via groups.io wrote:

Just a casual observation / opinion. The device looks to be rather expensive for typical ham use to me,
Unless of course you require testing capabilities in the 4.4 GHz ranges. The so called classic models
like the Nano VNA H4 operate up to about 1.5 GHz and are less than half the price. Other than that
I am not familiar with that particular device.

Chris,

Thanks for your comments. I agree about the price, although these days prices are always higher than expected! It was the large screen which attracted me, and I don't know of any other 7-inch models, and seeing the information Roger provided it does look well built

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

Attached are some photos showing what you get in the box and what it looks like inside.

What I find disappointing is that it does not come with an N connector calibration kit. Inside it uses a SMA to N connector adapter and then an N Connector to SMA adapter and SMA cal loads are used. This is not great because the cal is now done through two adapters.

On Sat, May 21, 2022 at 11:47 PM, David J Taylor wrote:

I see adverts for the SV4401A 4.4 GHz, 7-inch VNA from JNCRADIO, with N
connectors.





- Does anyone know anything further about this device?
- Has anyone bought one?
- What Windows software supports it?
- Where are the firmware updates to be found?

I have one on order, but I can return it if it's not good.

I see nothing in the group messages or the Wiki.

This is the latest product from SYSJOINT (one of the developers of the NanoVNA-F). There is a Chinese version and an English version and they are not compatible according to the manufacturer.

The Web sites describing the product are:
1.
2.

Specifications:


User manual:


Firmware is not open source and one vendor. ML&S UK, reports they have found some bugs which manufacturer is working on. >>

It connects to the PC with a SYSJOINT Version of NanoVNA Saver. Drivers for WIN 10 are not required. Win7 and WIN8 drivers can be downloaded from SYSJOINT.

Looks like it is well built but S11 and S21 dynamic range is something to take a look at.

Roger

WOW, you searched the internet... WOW, what a novel idea, would be cool if
others were to think of that...

AND put their name on their post...

John

A quick search on the internet yielded that it is a 75ohm-based VNA with a generator, like the NanoVNA. I also found a number of sites that had the manuals.

73
Evan
AC9TU

can anyone tell me what the WILTRON 6407 RF ANALYZER does,is it the same as a vna,or more,cheers.

Just a casual observation / opinion. The device looks to be rather expensive for typical ham use to me,
Unless of course you require testing capabilities in the 4.4 GHz ranges. The so called classic models
like the Nano VNA H4 operate up to about 1.5 GHz and are less than half the price. Other than that
I am not familiar with that particular device.

"or" is left in the question :)

How do you update or does your nanovna-H4 look like the attached video?


Link to get FW Hugen: