[Elecraft] WSJT FT8 TX not decoded using K3S TX - Rx ok

[HP]

Afire calling folks on ten who were running as much as +12 on Fri and Sat - and no answer 
I called a friend across town - He sees the signal and it will not decode. While he was listening 
he worked two stations on10 so his setup is working (K3S and Signalink) 

I hooked up my K3 - Signalink - and it will not decode the K3S tones -decodes band signals just fine . 
Makes no difference by band 80 or 10 the same and friend same on10 and 15 . 
BTW the K3S decodes on air signals just fine. 

This apparently happened in past week or so I do more listening than txing . Last FT8 qsos 
in log were 5 /10 . 

I uninstalled and re-installed WSJT -latest versions on both the K3 and K3S . No difference. 

I went to earlier K3S config file - no difference. 

Did an EEINT and still no difference-two different config files. 

Makes no difference 5 watts,20 watts ,50 watts out of K3S. ,or 450 watts out of KPA . (all into dummy load on both xcvrs.) 

Levels out of the computer are essentially same as always both rx and tx . Easy to get 4 bars ALC 
with 5th flickering . Tones in monitor sound clean and looking at the monitor audio on scope they 
are clean sine waves . The monitor signals look essentially the same on both the K3 and K3S. 

Tried looking at recovered audio tones both ways - they look pretty much the same but hard to tell 
dummy load to dummy load because of residual rx noise on the tones. Guess I could see if I could arrange to get 
more signal. 

Rig works on CW as always - dd not mess with SSB - Maybe I should look at two tone tomorrow -- 
or at least listen to it on SSB. 

I restored computer W10Pro 64 bit to several updates ago and no change. 
Rebooted computer - restarted programs . Clocks are within a tenth of a second. 

I am out of ideas -other than to change the K3S over to using the Signalink instead of the USB/internal codec. 
Guess I will do that later today since its 4 m. 
Nuts. 


Hank K7HP