[Elecraft] OT? K3s - WSJTX - MMTTY conundrum

Joe DeVincentis jd at ko8v.net
Mon Sep 18 08:18:21 EDT 2017


I was doing the exact same thing.  I was done with my FT8 and wanted to check things out for this weekend’s contest.  I could see lots of RTTY on the P3.  So I tuned some of the stations with MTTY and no decode.  I did eventually find one station that was decoding.  It was a W7 station.

That meant something was working. Then, I changed baud rate - set it to 75 and now I could decode most of the RTTY traffic I was seeing (some of the weak ones or the 45 stations - not so much).  The source of most of the RTTY I was seeing at the time was the BARTG Sprint 75 contest.

Maybe you ran into the same issue.

73.
Joe, KO8V

> On Sep 17, 2017, at 2:37 PM, Gary Smith <Gary at ka1j.com> wrote:
> 
> Hard to enter a short subject that is 
> complete...
> 
> Have a K3s using USB to the computer & the 
> internal card for digital modes.
> 
> I wanted to work a few Q's in the RTTY 
> contest and have been using WSJT-X for FT8 
> contacts. 
> 
> In the K3s WSJTX requires Data A for FT8 
> and in MMTTY it requires AFSK A (45BPS is 
> normal).
> 
> I went to use MMTTY after using WSJTX and 
> with an excellent scope copy of the RTTY 
> signals, gibberish is on the screen. I 
> tried Reverse; REV in MMTTY and tried ALT 
> in the K3 and no benefit. I tried so many 
> things to decode in MMTTY but nothing 
> worked until some random change in a K3s 
> setting worked and then perfect copy as 
> usual.
> 
> I later clicked on WSJT to make a Q, the 
> radio complied and switched to the 
> settings for WSJT and when I went back to 
> MMTTY, the copy was again gibberish. I 
> don't recall what it was I did to set the 
> K3s back so MMTTY can decode RTTY I did 
> return it to AFSK A 45 but nothing 
> decodes. 
> 
> It was a K3 setting that made the 
> difference but I have no idea what it was 
> I chanced on. anyone work out this issue 
> yet when switching from WSJTX to MMTTY & 
> the change in settings then required in 
> the K3s?
> 
> Thanks & 73,
> 
> Gary
> KA1J


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