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I've posted very little on this group in recent weeks other than to apologize for my NanoVNA-H4 error. I am working with ERIK on the design of his tinySA and am glad that last week ERIK has completed the v0.2 version with satisfactory results and is delivering it to more users for testing.

I had up to 5 days of vacation in China this week and I finished S-A-A V2.2 using the files on gitlab. Thanks to Gabriel Tenma White's clean design, I was able to buy almost all of the components at LCSC, so the installation went smoothly, here are the specifications of the components I used for the installation, hopefully without errors.

After doing some simple tests, up to 3.3GHz still gets good performance and it seems like I'm having success with my production.
Gabriel Tenma White, can I send my sample to you for confirmation?

One small problem, it seems that the LCD specs used for Gabriel Tenma White's design are not consistent with the lcdwiki's, and I have to calibrate the touchscreen to work properly.

On Tue, May 5, 2020 at 04:31 PM, Gabriel Tenma White wrote:

Looks good, the dynamic range and trace noise are all fine. Where's the
4'' display? ;)

Did you figure out how to use gEDA PCB? What layout software do you
usually use for your PCBs?

Try doing some modifications, like adding an amplifier to the reflection
signal path as suggested by another forum member, which may be able to
push the maximum frequency to 4.4GHz. I'm busy on other projects but you
can try improving the V2 design further.

On 5/5/20 4:03 PM, hugen@... wrote:

After doing some simple tests, up to 3.3GHz still gets good performance and

it seems like I'm having success with my production.

Gabriel Tenma White, can I send my sample to you for confirmation?

One small problem, it seems that the LCD specs used for Gabriel Tenma

White's design are not consistent with the lcdwiki's, and I have to calibrate
the touchscreen to work properly.

Thanks for the reply, I don't know how to use gEDA, NanoVNA-H and tinySA both use easyEDA design, but easyEDA gets very slow in designing 4 layer boards, I don't know how to start designing 4 inch version yet.
If there are members of this group willing to participate in the design of the 4-inch version of the PCB, I can provide some 4-inch LCDs.
I tried to reduce the transformer by one turn to make the 617DB-1023 into a 617DB-1022, but that didn't improve and I'll do some testing as suggested by some of the team members.

I'm trying to design a case and install a battery for the current version of the S-A-A V2.2, hoping it will be as portable as the nanoVNA-H.
I will probably sell the current version of the S-A-A V2.2 after completing the case design, due to my cooperation agreement with TTRFTECH (edy555), I will not mark the S-A-A V2.2 as NanoVNA V2 when selling it.

Additionally how should I pay your team for the design if I sell them.

On Tue, May 5, 2020 at 07:03 PM, Gabriel Tenma White wrote:

Most of the open source community use KiCAD nowadays, we designed it in gEDA
because that was what we were most familiar with. If you plan to do a lot of
rework on the layout (e.g. larger board), you can also consider redoing the
layout in KiCAD.

The design is LGPL licensed and commercial use is allowed for all OwOComm
designs (we don't take royalties). Still I recommend making some improvements
to the design and differentiating your product somewhat. Some ideas: port
change-over switch so that ports 1 and 2 can be swapped in software, allowing
measurement of all 4 S parameters (3 stages of RF switches should give
sufficient isolation). 4'' version with larger PCB should also allow for
better layout design with higher isolation/dynamic range. A redesign of the
reflection bridge could lower cost (e.g. MMIC based differential amplifiers
instead of 2 baluns) and/or improve SNR which can allow faster sweep rates.
etc etc.

Thanks for the advice, as I am not a professional radio designer I still need to learn more, maybe I will move the power supply and MCU to the LCD PCB when making the 4" version.

hugen,
Gabriel's V2 firmware supports either a 2.8" or 3.2" display module via the 14-pin connector. A 3.2" S-A-A-V2 using your AA font would distinguish your product from the first S-A-A-2 production run. Gabriel's PCB board does not accommodate mounting holes for a 3.2" display module so you would have to increase the foot print of your pcb to allow for mounting either a 2.8" or 3.2" module.

The 14-pin connector also supports a the ST7796S 4" display module but as you know the firmware does not currently support the the ST7796S. Maybe you could get DiSlord to cooperate with you on adding support for the the ST7796S 4" display. I believe Gabriel used some of his open source code when writing the S-A-A-2 firmware.

I wish you luck with the S-A-A-V2, a second source with your experience would be great. The tinySA design looks like another winner along with the NanoVNA-H v3.4 and NanoVNA-H4. You are going to have to hire more people so you can take a vacation more often.

- Herb

In these times of challenge and change, the ham radio and the RF community should rejoice.

Vector network analyzers — VNAs — haven’t had quite a proliferation, but NanoVNA changed that.

Started with edy555 and his will to share the principles and first iteraction with the community.

After Hugen picked it up - acting in a responsible and fair manner all the way - the nanoVNA exploded:

Several HW versions, great contributions regarding FW, and most of all this great community gathered
here at the /g/nanovna-users/ with high quality dialog and ongoing development and sharing of knowledge that made it possible.

Just to name a few, the outstanding PC Sofware nanoVNA-Saver from Rune and the FW restless contributor DisLord that made the H4 a "terrific machine".

Now we have 2 new devices: tinySA (erik/Hugen) and S-A-A-V2.2 (Hugen), the range of devices, the affordability but most importantly the accuracy contained in a small package.

The best possible tribute to Hertz, Tesla, and Braun.

We do see times of change, and what is most important, its the path, not the destination.

I have learned a lot with all of you and I will sure continue to learn :)

Instead of royalties maybe Hugen can fund OwOComm to further improve the
design?

On Tue, 5 May 2020 at 13:03, Gabriel Tenma White <OwOwOwOwO123@...>
wrote:

Most of the open source community use KiCAD nowadays, we designed it in
gEDA because that was what we were most familiar with. If you plan to do a
lot of rework on the layout (e.g. larger board), you can also consider
redoing the layout in KiCAD.

The design is LGPL licensed and commercial use is allowed for all OwOComm
designs (we don't take royalties). Still I recommend making some
improvements to the design and differentiating your product somewhat. Some
ideas: port change-over switch so that ports 1 and 2 can be swapped in
software, allowing measurement of all 4 S parameters (3 stages of RF
switches should give sufficient isolation). 4'' version with larger PCB
should also allow for better layout design with higher isolation/dynamic
range. A redesign of the reflection bridge could lower cost (e.g. MMIC
based differential amplifiers instead of 2 baluns) and/or improve SNR which
can allow faster sweep rates. etc etc.

On Wed, May 6, 2020 at 04:14 AM, CT2FZI wrote:

In these times of challenge and change, the ham radio and the RF community
should rejoice.

Vector network analyzers — VNAs — haven’t had quite a proliferation, but
NanoVNA changed that.

Started with edy555 and his will to share the principles and first iteraction
with the community.

After Hugen picked it up - acting in a responsible and fair manner all the way
- the nanoVNA exploded:

Several HW versions, great contributions regarding FW, and most of all this
great community gathered
here at the /g/nanovna-users/ with high quality dialog and
ongoing development and sharing of knowledge that made it possible.

Just to name a few, the outstanding PC Sofware nanoVNA-Saver from Rune and the
FW restless contributor DisLord that made the H4 a "terrific machine".

Now we have 2 new devices: tinySA (erik/Hugen) and S-A-A-V2.2 (Hugen), the
range of devices, the affordability but most importantly the accuracy
contained in a small package.

The best possible tribute to Hertz, Tesla, and Braun.

We do see times of change, and what is most important, its the path, not the
destination.

I have learned a lot with all of you and I will sure continue to learn :)

S-A-A-V2.2 is the original design and naming of OwOComm, you can view the original design of OwOComm at gitlab. With permission, I prefer to use the original naming.

On Wed, May 6, 2020 at 08:10 AM, Dragan Milivojevic wrote:

Instead of royalties maybe Hugen can fund OwOComm to further improve the
design?

On Tue, 5 May 2020 at 13:03, Gabriel Tenma White <OwOwOwOwO123@...>
wrote:

Most of the open source community use KiCAD nowadays, we designed it in
gEDA because that was what we were most familiar with. If you plan to do a
lot of rework on the layout (e.g. larger board), you can also consider
redoing the layout in KiCAD.

The design is LGPL licensed and commercial use is allowed for all OwOComm
designs (we don't take royalties). Still I recommend making some
improvements to the design and differentiating your product somewhat. Some
ideas: port change-over switch so that ports 1 and 2 can be swapped in
software, allowing measurement of all 4 S parameters (3 stages of RF
switches should give sufficient isolation). 4'' version with larger PCB
should also allow for better layout design with higher isolation/dynamic
range. A redesign of the reflection bridge could lower cost (e.g. MMIC
based differential amplifiers instead of 2 baluns) and/or improve SNR which
can allow faster sweep rates. etc etc.

Since I only design in my spare time and I still lack some professional knowledge, my development will be very slow.
If you are able to participate in the development, I will provide all support, including manufacturing the PCB and completing all installation and testing, and if it is verified that the final product is ready for sale, I will pay for the license in a manner that you approve.

I know it is off group but I thought someone might have tried the ltdz
35-4400 SA and have the console api list for it. The same processor as the
nanovna is used.

On Tue, May 5, 2020 at 08:59 PM, William Heller wrote:

ltdz 35-4400 SA

This device does direct conversion to zero Hz IF without any preselection of sideband selection so terrible performance
See the reviews on youtube.

--
NanoVNA Wiki: /g/nanovna-users/wiki/home
NanoVNA Files: /g/nanovna-users/files
Erik, PD0EK

On Wed, May 6, 2020 at 05:59 AM, William Heller wrote:

I know it is off group but I thought someone might have tried the ltdz
35-4400 SA and have the console api list for it.

I have a LTDZ 35-4000 MHz Spectrum Analyzer board and use it with the Program WinNWT4.
See also

The API is described in file LinNWT_doc_en.pdf,
in chapter 6, The Protocol on the serial interface

It would be nice to use it also for Eric's tinySA.

73, Rudi DL5FA

On Wed, May 6, 2020 at 11:59 AM, William Heller wrote:

I know it is off group but I thought someone might have tried the ltdz
35-4400 SA and have the console api list for it. The same processor as the
nanovna is used.

On Tue, May 5, 2020, 6:39 PM <hugen@...> wrote:

On Wed, May 6, 2020 at 04:14 AM, CT2FZI wrote:

In these times of challenge and change, the ham radio and the RF

community

should rejoice.

Vector network analyzers — VNAs — haven’t had quite a proliferation,

but

NanoVNA changed that.

Started with edy555 and his will to share the principles and first

iteraction

with the community.

After Hugen picked it up - acting in a responsible and fair manner all

the way

- the nanoVNA exploded:

Several HW versions, great contributions regarding FW, and most of all

this

great community gathered
here at the /g/nanovna-users/ with high quality dialog

and

ongoing development and sharing of knowledge that made it possible.

Just to name a few, the outstanding PC Sofware nanoVNA-Saver from Rune

and the

FW restless contributor DisLord that made the H4 a "terrific machine".

Now we have 2 new devices: tinySA (erik/Hugen) and S-A-A-V2.2 (Hugen),

the

range of devices, the affordability but most importantly the accuracy
contained in a small package.

The best possible tribute to Hertz, Tesla, and Braun.

We do see times of change, and what is most important, its the path, not

the

destination.

I have learned a lot with all of you and I will sure continue to learn :)

S-A-A-V2.2 is the original design and naming of OwOComm, you can view the
original design of OwOComm at gitlab. With permission, I prefer to use the
original naming.

The ltdz 35-4400 SA appears to be a clone of the D6 SA, which is compatible with the NWT series software.
This is the software that Github enthusiasts have redeveloped for D6 to be more compatible with NWT and SNAsharp.

On Wed, May 6, 2020 at 04:52 PM, <reuterr@...> wrote:

On Wed, May 6, 2020 at 05:59 AM, William Heller wrote:

I know it is off group but I thought someone might have tried the ltdz
35-4400 SA and have the console api list for it.

I have a LTDZ 35-4000 MHz Spectrum Analyzer board and use it with the Program
WinNWT4.
See also

The API is described in file LinNWT_doc_en.pdf,
in chapter 6, The Protocol on the serial interface

It would be nice to use it also for Eric's tinySA.

73, Rudi DL5FA

Rudi, NWT is designed to be used more as a scalar network analyzer, so the performance of NWT as a spectrum analyzer is poor. nanoVNA and S-A-A V2 are both vector network analyzers that can completely replace NWT's scalar network analyzer functions, so we tried to make a better performance spectrum analyzer. tinySA uses a similar shell as NanoVNA for interaction, so it is not directly compatible with NWT. tinySA's functions are more similar to rf-explorer, but offer a more user-friendly interface and excellent performance with smaller size and more competitive price.

Translated with www.DeepL.com/Translator (free version)

hugen

On Wed, May 6, 2020 at 11:06 AM, <hugen@...> wrote:

Rudi, NWT is designed to be used more as a scalar network analyzer, so the
performance of NWT as a spectrum analyzer is poor. nanoVNA and S-A-A V2 are
both vector network analyzers that can completely replace NWT's scalar network
analyzer functions, so we tried to make a better performance spectrum
analyzer. tinySA uses a similar shell as NanoVNA for interaction, so it is not
directly compatible with NWT. tinySA's functions are more similar to
rf-explorer, but offer a more user-friendly interface and excellent
performance with smaller size and more competitive price.

Hugen, thank you very much for the good explanation :-).

73, Rudi DL5FA

hugen
I would like to buy version SAA V2.2 for my tests. Where can i do this? I have no complaints about the quality of work, I'm interested.
Aleksander.
shalygin@...

About spectrum analyzer. Please try to have narrow band width also. That is, many educators and hams would like to see how their modulator work and how does the spectrum look. Like what would 300Hz SSB, AM and FM look like. Or QAM

Sorry about this OFF TOPIC post.

On Thu, May 7, 2020 at 08:11 AM, Leif M wrote:

About spectrum analyzer. Please try to have narrow band width also. That is,
many educators and hams would like to see how their modulator work and how
does the spectrum look. Like what would 300Hz SSB, AM and FM look like. Or QAM

Sorry about this OFF TOPIC post.

Leif, if you are interested in tinySA, you can join this group.
/g/tinysa/

Did it. Thanks.
Leif

Hi, will you screw the 4 inch V2 display?