FYI- weitergeleitete Info bzgl FT2 Status


Von: Stefan Wagner via Wsjt-x-improved-community <[email protected]>
Gesendet: 26. Februar 2026 01:11:59 MEZ
An: "Uwe, DG2YCB" <[email protected]>, [email protected]
Betreff: Re: [Wsjt-x-improved-community] V3.1 Fails After Start

The "inventor" of FT2 answered in a Facebook post:

Let's get this straight.

Some people think FT2 is just "WSJT-X with a shorter timer". Wrong.

Go ahead — take FT8, change the timing to 3.8 seconds, and see what happens. I'll tell you: it decodes nothing. Why? Because when you compress everything into 3.8 seconds, propagation delays become a massive problem. Without a proper DT (Delta Time) alignment system, the software simply doesn't work.

This is exactly why DECODIUM 3.0 works and the copies don't.

The DT alignment algorithms in DECODIUM are proprietary software, written by me from scratch. They are the heart of FT2. They are what turns an idea into a protocol that actually works on the air. The version in WSJT-X Improved doesn't have them. It only has the raw decoder, without any of the mechanisms that make the real difference. Anyone who has tried both knows it.

And let me add some context that people seem to forget: this software was less than a week old. Less than a week. The hype went through the roof before I even had time to understand what was happening. The software was still full of bugs everywhere, and people were already demanding the source code. I didn't even have time to breathe, let alone clean up the code and organize a proper release. But apparently that wasn't fast enough for some.

FT2 was conceived and designed by me, Martino IU8LMC, with the aid of artificial intelligence tools — something I have always stated openly. AI helped me write code faster. But if you don't know what to build, AI won't invent it for you.

Nobody in the world had this idea in seven years. I did, I built it, and I put it on the air on February 16, 2026. Today we are over 1,000 operators and ADIF certification is underway.

These are facts, not opinions.

73 de IU8LMC 🇮🇹
DECODIUM 3.0 — ft2.it

Source:
https://www.facebook.com/share/p/1KKbdY8Hbf/

I also wrote that FT2 was not invented by him, his answer:

Stefan Wagner You will answer these claims before an international court be prepared with a good lawyer.

Source:
https://www.facebook.com/share/p/1CNFm3WY8U/

The question is who really needs a good lawyer at the end. Big theatre..


Regards 

Stefan 
DO9KW

Am 25. Februar 2026 11:08:24 schrieb "Uwe, DG2YCB via Wsjt-x-improved-community" <[email protected]>:

Hi all,

Thanks for testing last night's "nightly" build, and for all your feedback and bug reports. It appears that open-source implementation of FT2 was successful. You reported primarily two issues:
1. A few OMs experienced a subprocess error. It turned out that the root cause was not FT2 but other changes to our FORTRAN files. I will probably release a new 260226 (beta) version tomorrow, where this has been fixed; it will also include the source code and the familiar installation packages.

2. Occasional audio issues: I saw the same with Decodium, even though the two source codes have nothing to do with each other. So it seems to be a more fundamental problem, probably related to the extremely short timing required for FT2. Could be difficult to fix. Let's see if we can optimize this in the long term.

Otherwise: WSJT-X Improved 3.1.0 26026 will have at least one more interesting feature compared to the tried-and-tested 3.0.0 251212. But more on that tomorrow.

Note: After first start, go to Settings -> Frequencies, right-click on the frequencies table and click on Reset. This will bring you the new (tentative) FT2 QRGs, and the band buttons will then also work for FT2.

73 de DG2YCB,
Uwe
________________________________________
German Amateur Radio Station DG2YCB
Dr. Uwe Risse
eMail: [email protected]
Info: www.qrz.com/db/DG2YCB


Am 24.02.2026 um 20:24 schrieb Brad Darnell:
Uwe -

I successfully installed 3.1, however, it fails with "Subprocess Error -
Exit Code2" shortly after start. I tried running as Admin, with the same
result.

The specific error was "Fortran runtime error: Index '1' of dimension 1 of
array 'dd8' outside of expected range (0:0)"

Let me know if you need additional information.

-73 from

Brad Darnell
WA9BD
[email protected]
[email protected]
      

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Sent: Tuesday, February 24, 2026 13:59
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Subject: Wsjt-x-improved-community Digest, Vol 41, Issue 29

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Today's Topics:

   1. Re: FT2 successfully reverse engineered as open source!
      (Uwe, DG2YCB)


----------------------------------------------------------------------

Message: 1
Date: Tue, 24 Feb 2026 19:58:55 +0100
From: "Uwe, DG2YCB" <[email protected]>
To: Wsjt Improved <[email protected]>
Subject: Re: [Wsjt-x-improved-community] FT2 successfully reverse
	engineered as open source!
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"; Format="flowed"

Hi all,

A first alpha build of WSJT-X Improved v3.1 with open-source FT2 mode is 
now available for testing *on my SourceForge page 
<https://sourceforge.net/projects/wsjt-x-improved/files/WSJT-X_v3.1.0/>*.
Don't worry, I will publish further installers and the source code soon. 
But I wanted to make the Win64 improved PLUS version available to those 
interested before I sign off for the day.

To import the new (temporary) FT2 frequencies, please right-click on the 
table at Settings -> Frequencies, and then click on Reset. Otherwise, 
operation should be intuitive (like FT4).

Please send me your initial feedback on whether it works or not.

73 de DG2YCB,
Uwe
________________________________________
German Amateur Radio Station DG2YCB
Dr. Uwe Risse
eMail: [email protected]
Info: www.qrz.com/db/DG2YCB


Am 24.02.2026 um 13:23 schrieb Uwe, DG2YCB:

Hi all

I just wanted to let you know that we have successfully 
reverse-engineered FT2 mode into open source (see screenshot below)!

Apart from whether an FT2 mode alongside FT4 makes sense at all, in my 
eyes the best answer to the brazen behavior of this Italian group was 
to simply reverse engineer ?IU8LMC's? FT2 mode and publish it as open 
source. Just on principle! To take the wind out of the sails (as we 
say here in DL) of people who obviously have fame and/or money 
primarily in mind.

You should know that the history of FT2 goes back to experiments by 
Joe and Steve in early 2019 (at that time with a TR period of 2.5s). 
Later it was introduced as FT4, first with 5s TR period, and then with 
7.5s because with 5s the success rate of QSOs was not good enough.

IU8LMC introduced "his" FT2 mode with slightly modified parameters 
(3.8s TR period). He is free to do so, provided he clearly states what 
?his? FT2 mode is ultimately based on, and that he publishes the 
source code. But he refused.*Such a behavior is not only a violation 
of GPLv3, it is also the opposite of ham spirit and contradicts Joe's 
and our open source approach for WSJT-X!* *Furthermore, it is unfair,* 
as "his" Decodium program is nothing more than a (poorly working) fork 
of our (now obsolete) joint WSJT-X and WSJT-X Improved 3.0.0-rc1 
250915 release. This means, that 99.5 % of "his" Decodium software is 
based on our work. ("His" Decodium program is currently full of bugs, 
by the way.)

Nevertheless, according to PSKReporter statistics, almost 4,000 users 
are already using FT2 mode (within two weeks). This indicates that 
there seems to be some interest in the market for such an ultra-fast 
mode. (Or maybe you are all just bored, and urgently needed something 
new to play with, hi). Let's see if FT2 proves itself alongside FT4, 
or if it's just a short-lived hype.

I haven't decided yet whether I will keep this new mode in WSJT-X 
Improved, but for the reasons mentioned above, I would like to release 
a new WSJT-X Improved (beta) version soon, where the FT2 mode is 
included open-source and in the usual "WSJT-X Improved quality".



I'm still in the process of optimizing a few things, but basically 
it's already working well. Stay tuned!

73 de DG2YCB,
Uwe
________________________________________
German Amateur Radio Station DG2YCB
Dr. Uwe Risse
eMail: [email protected]
Info: www.qrz.com/db/DG2YCB



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