[Elecraft] K3 and WSJT-X Split operation.

[donovanf at starpower.net]

Hi Steve, 


I have the same problem with inadequate audio from my sound card 
when I use the rear panel Line In connector. But it works great if 
I use the front panel microphone connector. 


73 
Frank 
W3LPL 

----- Original Message -----

From: "Steve Lund" <k6um.elist at gmail.com> 
Cc: elecraft at mailman.qth.net 
Sent: Tuesday, December 5, 2017 11:06:14 PM 
Subject: Re: [Elecraft] K3 and WSJT-X Split operation. 

I have to run my K3 (S/N 1260) in split mode for WSJT-X. 

It works fine for tone frequencies above 1500 Hz, but for low (<1000 Hz) 
tones I can't get the ALC above a few bars with all controls (windows, 
wsjt-x, K3) to their maximum settings. 

Split 'solved' the problem, so I haven't investigated what is causing the 
low frequency roll off. 

Steve, K6UM 

On Tue, Dec 5, 2017 at 6:11 PM, Christopher Hoover <ch at murgatroid.com> 
wrote: 

> I second Carl's explanation. 
> 
> I run WSJT-X on my K3s in rig split mode exclusively. It works 
> transparently and flawlessly. 
> 
> 
> On Mon, Dec 4, 2017 at 5:02 PM, Carl Clawson <clawsoncw at gmail.com> wrote: 
> 
> > Hi Dany. This scared me a little bit too until I figured out what it was 
> > for. 
> > 
> > This is not just for expeditions. It's for everyone to use whose rig can 
> > handle it. 
> > 
> > Your TX frequency will still be as indicated on the FT8 screen. The 
> > software will raise the audio tone frequency by the same amount that it 
> > drops your VFO B so that your tone is in the right place. By doing this, 
> > the audio tone frequency is kept high enough that its harmonics will be 
> out 
> > of your FT8 passband. This is good -- it helps keep the band clean. 
> > 
> > See section 4.2 in the wsjt-x user guide. 
> > 
> > 73, Carl WS7L 
> > 
> > 
> > On Mon, Dec 4, 2017 at 3:59 PM, Dany VE2EBK <ve2ebk at hotmail.com> wrote: 
> > 
> > > Hi 
> > > 
> > > I would like to know if someone tried to run WSJT-X FT-8 in Split 
> mode, 
> > > not Split in the audio band but in real Split by activating the option 
> in 
> > > the radio tab of the configuration? 
> > > 
> > > Here, when I activate Split option, K3 change for Split, RX stay on VFO 
> > A, 
> > > TX change to VFO B but TX frequency drop of 1 kHZ ! If I turn the VFO 
> B 
> > > (TX) 3 kHz up for example, the VFO B return 1 KHz down when a 
> > transmission 
> > > start (TUNE is enough). 
> > > 
> > > This option seems to have been for the DX station rather than for use. 
> > > 
> > > It would be nice to check this before the 3Y0Z DXpedition that during 
> > ... 
> > > 
> > > 73 
> > > 
> > > Dany VE2EBK 
> > > 
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