FT2 is Extremely Critical on Time

[Clark L. Stewart]

I have been reading many posts by people complaining that they are not getting decodes in FT2.  Many are trying to "remote" into their stations.  The "latency" between their current station and the remote station can be the problem.  Also the computer's clock needs to be REALLY correct!

On Feb 28, 2026, at 6:06 PM, Gary Rogers <cgaryro...@gmail.com> wrote:

Alan, the time sync for FT2 is very tight. If the DT is more than 0.06 secs, the signals won’t decode. If the signals bleed over the time period lines on the waterfall, this means the DT is too high to decode. Between the other station's DT and any latency in your internet connection, remote FT2 may be a tough go.

On 2/28/2026 6:27 PM, l...@imaginarymagnitude.net wrote:

Although I don't have any insight of actual implementation neither about the mode itself, with such short turns I'd expect few decodes -if any - due poor timing between ends and/or network latency.  Sometimes simply we cannot have it all.

To try and correct some of the timing issues, Uwe has released a newer version today (February 28th).  Here is the link to SourceForge with the newest files:

https://sourceforge.net/projects/wsjt-x-improved/files/WSJT-X_v3.1.0/

Look for the 3 files that end with "260228.exe" (Stands for 2026-Feb-28th)


On 2/28/2026 12:48 PM, Uwe, DG2YCB via Wsjt-x-improved-community wrote:
> Hi Hasan and all,
>
> The main reason for today's 260228 update was that we finally found (and hopefully) fixed the root cause of a timing issue which sometimes let the program switch to the wrong time slot. It was due to a rounding error, by the way. Good when it works now.
>
> FYI: I will upload slightly enhanced "260228" Windows 64-bit installers within the next 30 minutes or so. The only difference is that we can now also use TCI for FT2 mode (including TCI audio).
>
> 73 de DG2YCB,
> Uwe
> ________________________________________
> German Amateur Radio Station DG2YCB
> Dr. Uwe Risse
> eMail: dg2...@gmx.de
> Info: www.qrz.com/db/DG2YCB



73, Clark, W8TN