Remember to get a ~30db amplifier to install between the cal output and the converter. You could use an external source like a GPS controlled 10Mhz oscillator but remember that the frequency will be off exactly the amount the Tiny is off from the GPS / external oscillator.


John

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Hey Bob,

I ordered mine from ebayism # 123657087461, will let you know how it goes after I receive and test it.

Mike C. Sand Mtn GA

Here's an example.? This screen shot shows the tinySA-App trace of a single scan (Moving Average Filter: off, Calc: off) with markers.? The corresponding lines of the saved CSV do not show the same amplitude values as the app markers.? To me, this looks like a scaling error in the CSV export?

545762525.000;?????????? -134.809?????????? (marker shows -117.1)
548322611.000;??????????? -69.185??????????? (marker shows -60.094)
655479516.000;?????????? -135.025?????????? (marker shows -117.28)

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I cannot seem to find it either, however last night some how I did it accidentally

Rich

When exporting CSV trace files from TinySA-App connected to my Ultra, the amplitude values in the file are around 10 dBm lower than traces shown in the app.? I tried many different RBW and points per scan and get similar results.? Can anyone try this and let me know if yours are also doing this?? Thanks!

With further study, it seems that the CSV amplitude values range from 10 dBm to 20 dBm lower than the display trace.? Hmm...

Hi all,

When exporting CSV trace files from TinySA-App connected to my Ultra, the amplitude values in the file are around 10 dBm lower than traces shown in the app.? I tried many different RBW and points per scan and get similar results.? Can anyone try this and let me know if yours are also doing this?? Thanks!

Lane,
For me it looks fine, no objections. Your Windows build succeeded, so were done!
Martin

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Today, with a fresh Git update, this is what I get: (I assume it is correct)
Lane

Martin, here is the updated "Compiling from Windows 10" notes:
Please review to make sure it is accurate. Seems to work fine here.
Lane

The following is notes made by Lane and Martin, that describes how to compile the tinySA firmware under a Windows 10 environment. It also describes the software tools needed to perform the compile. This information was written updated on Dec. 22, 2022. (Updated for latest version v1.4)

Compiling from source code (using Git) on Windows 10

Using the Mingw64 Git Bash shell, in the drive folder you wish to hold the tinySA source code, do the following git / GitHub commands. This will create a new folder called: “tinySA”. This provides an easy cold start:

git clone?
cd tinySA
git pull
git submodule update --init --recursive

To build tinySA firmware you can type:?
make

To build tinySA Ultra firmware you can type:
make TARGET=F303

This should produce the *.bin *.hex and *.elf in directory build. ARM GCC toolchain 11.x will work, you can also use 8.x and Erik's builds are still on 7.x, so it should work without an issue.

With every new version that Erik puts on GitHub you should do a new:

make clean???????????????????????????? (if you build original tinySA firmware)

? ?or

make TARGET=F303 clean?? (if you build tinySA ULTRA firmware)
git pull

and you can start again.

If you want to make your own changes etc. you should create a new branch with:

git checkout -b MyNewFeature

You will then be on your new branch.

Firmware Compile Tools Required

1.)??? ARM GNU Tools

2.)??? MinGW tools

Getting/Installing the ARM GNU Tools:

Go to click on Download to download the ARM GNU toolchain installer. As of Dec 15, 2022, recommend using the 11.3Rel1 installer. Newer versions may work as well.

Arm-gnu-toolchain-11.3.rel1-mingw-w64-i686-arm-none-eabi.exe

Download the installer and run it installing the files into the default locations.

Getting/Installing MinGW tools:

There does not appear to be a single/simple method of installing the MinGW tools. The MinGW tools are required to provide the “make” tool used to build the tinySA firmware. There are multiple sources and ways to do this. Download and then using the “mingw-get-setup.exe” tool from SourceForge. It will then download the next level installer allowing you to download the parts of the MinGW package you need. ?This is just one method, MinGW is contained within other software development tool too.

Obtain WinGW Get Installer from SourceForge:

?

Run the mingw-get-setup.exe to get MinGW installer:

When running the MinGW installer, you only need the "minw32-base" package. Recommend that you install the MinGW files into a high-level folder on your PC such as: C:\MinGW

?

See various tutorials: (There are lots)

https://www.ics.uci.edu/~pattis/common/handouts/mingweclipse/mingw.html

https://www.youtube.com/watch?v=sXW2VLrQ3Bs&ab_channel=ProgrammingKnowledge2

https://www.geeksforgeeks.org/installing-mingw-tools-for-c-c-and-changing-environment-variable/

https://www.youtube.com/watch?v=Zcy981HhGw0&ab_channel=SemicolonDotDev

https://www.youtube.com/watch?v=dRxPUblx2SY&ab_channel=AnielMaharajh

?

Last step is to run the Windows Environment variable tool: Windows->Settings->Advanced System Settings->Environment Variables. Using this tool, you will need to add to the PATH environment variable, either user or System variables, the path that you used when you installed the MinGW tools. The example above shows the path as C:\MinGW

Run this command from the Mingw64 Git Bash shell:

Make --version

Ensure that it runs and displays the current version number of the make tool. If this does not work, then check the .bashrc file in your windows home folder (Typically look in C:\Users\<Your_Login_Name>) and make sure it contains this line:

alias make=mingw32-make.exe

?

That's a good tip Bob, the next prob;em is to get a suitable antenna, i have had success with a pa0rdk "miniwhip antenna" here is a link;

It receives novosibirsk elf from russia etc. in my car on the beach in NZ and is powered from a 9v battery.
The antenna is the pcb patch on the left, uses only one fet andthe little white pot is to limit the gain of the sa602 mixer and the white wire is the output.
Hope the picture is good enough to see how it's done and a bigger version appears in the " pictures>emailed pictures" section.

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Thanks,? I never knew the jog wheel had multiple functions.

I guess I need to figure out how I changed the function accidentally

Rich

On Wed, Dec 21, 2022 at 12:40 PM, Ed Wilson wrote:

when textbooks were printed on paper and purchased in a bookstore

As do I! ?Not only that, I could afford the textbooks.

larry

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Thanks John.
Appreciate the reply.
A search for "BG7TBL" returned a lot of stuff on 10MHz sources.
I will have another look around using the "SA LF Converter" search terms.
Cheers...Bob VK2ZRE

Hi Bob,
I bought it in 2018 or 19 from a vendor on Ali Express and the vendor was according to my notes Ham Radio Shop. Great to deal with, but of course that was nearly 4 years ago and thus who knows if they still exist or are still of the same quality. It goes by the brand BG7TBL and is called SA Low Frequency Converter. If you deal with any of the vendor like this, Don't get discouraged if the item isn't on the page,always send them a message through the Ali Express messaging system asking for what you need. Chances are, they have it but not listed or know where to get it.

John

Lane,

That's correct, but also these lines are not needed anymore:

The easiest way to find out where (and which branch) the latest code is??The development branch is currently "V4.3" since quite a long time, unfortunately Erik's default branch is still on "master". So, you should always look at:

Martin

The jog wheel can move start, stop, center freq or markers.
Look at the small triangle in front of the start/stop/center freq or marker and you know what is selected and can be changed by the jog wheel.
Touching a marker will switch control to that marker.
--

On Thu, Dec 22, 2022 at 12:04 AM, Lane Wilson wrote:

$ git describe

Lane,

It shall be

$ git describe --tags

because the v1.4 is only a lightweight tag, which is just a kind of comment, while the v1.2 and also the (fixed) v1.3 were annotated tags. Yes, the difficulties of git :)

Martin

Martin

I turned off the unit and when I turned it back on everything was working as expected.?? I have no idea why the jog wheel was changing the Start freq.

Sorry for the false alarm

Rich

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Hi John,

Can you recommend the "brand" of Up Converter you have and a reliable supplier please.
As you say, there are a plethora of clones out there. I would rather get "The Real McCoy".

TIA...Bob VK2ZRE