Within WSJT-X there is a slight delay between the time the PTT command is issues and the start of DATA audio.   The value is established via the F2 setup menu, Advanced page, under Miscellaneous.    Additionally if you are using VOX control via the radio, this delay of audio is very apparent.   I suggest you configure for CAT control.  Also, if you are using VOX the VOX delay must time out before the radio returns to receive.

Depending on other applications which may be running on the computer, the lag time due to processor activity may be apparent as well.   And there is processor timing activities within the radio which adds delay time to transitions.

I find CAT control to be preferable to VOX control.

73

Bob


On 2/22/2018 4:22 PM, James Bennett wrote:
Got a question about using my K3 with WSJT-X 1.8.0 with FT8

I started looking at the “time bar” in WSJT-X and when the K3’s red TX light 
comes on with the meter showing RF going out. It is between 1.5 and 2 seconds 
after the beginning of the new 15 second sequence! In that short duration, I am 
hearing other stations’ signals coming through on my headphones, so I know that 
other folks are getting their rig to transmit right at the start of the 15 
second sequence. If mine is coming on 1.5 - 2 seconds late, I’m thinking I may 
not always get decoded on the other end.

So, I switched over to my KX3 running the same version of WSJT-X and observed 
what happened there. No delay - when the new 15 second sequence starts, the KX3 
goes into transmit almost immediately.

Both the KX3 and the K3 are connected to two identical Tascam USB125M external 
sound cards.

Is there some setting on the K3 that is causing my transmissions to fire off a 
tad late?

Jim / W6JHB
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to rmcg...@blomand.net


______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Reply via email to