[Elecraft] K3 And WSJT-X FT8 Timing

[Jim - N4ST]

Jim,

Since you are using separate computers, are you sure the time is correct on your K3S computer?
Since you are using separate computers, can you monitor your K3S transmissions on your KX3 system and see what delay it is showing?

_________ 
73,
Jim - N4ST

-----Original Message-----
From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of James Bennett
Sent: Thursday, February 22, 2018 18:30
To: Elecraft Reflector Reflector <elecraft at mailman.qth.net>
Subject: Re: [Elecraft] K3 And WSJT-X FT8 Timing

Hi Dennis - how you doing?

Sorry I neglected to provide enough info - was in a hurry to post that before I had to run out to pickup kids at school (close to your dads QTH!)

I am using VOX on both rigs. Each rig has it’s own computer and separate, but identical external USB sound cards. The K3 is connected to an iMac and the KX3 is connected to a Raspberry Pi 3.

Jim / W6JHB



> On Feb 22, 2018, at 2:31 PM, Dennis Moore <dennis at mail4life.net> wrote:
> 
> How are you keying the K3, VOX or PTT?
> 
> It's not clear from the email, are the K3 and KX3  on separate computers on just different sound cards in the same computer?
> 
> 73, Dennis NJ6G
> 
> 
> On 2/22/2018 14:22, 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
> 
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