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K3s/WSJT-X 1.80rc1 TX issue

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Serge_VA3SB

K3s/WSJT-X 1.80rc1 TX issue

Hello to the group.

I am receiving no problem at all. I am however having difficulty in getting
WSJT-X to transmit. I am using a K3s.

I have the K3s set up for Data A (USB) mode operation and have the MAIN:MIC Sel
set to LINE IN.

On the WSJT software Settings under the <Radio> tab I have selected the K3
under Rig, set the serial port that I normally use for CAT control (COM 5 in my
case), I have set PTT method to CAT, the set Mode to None, and set Split
Operation to None. Not quite sure how to change the Transmit Audio source
setting as it is greyed out. It is presently set for Front / Mic.

If I hit the TUNE button on the WSJT software my transceiver goes into transmit
mode but there is no output at all.

Any help/guidance would be greatly appreciate. Thank you in advance.

73

Serge

VA3SB
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Philip Anderson

Re: K3s/WSJT-X 1.80rc1 TX issue

The first thing to check is that you are actually feeding audio into the
K3 MIC socket.

Assuming that's OK, you also need to make sure whatever tone the WSJT
software is generating is *below* the cut-off frequency of the K3's
baseband audio filter.

I've found on my KX2 that under certain settings, it's possible for WSJT
to generate tones that are above this cut-off frequency (about 3KHz from
memory), the symptoms are exactly as you describe (rig goes into
transmit, but no R.F. transmitted).

Phil G4PWO

On 11/08/2017 15:30, Serge Bertuzzo wrote:

> Hello to the group.
>
> I am receiving no problem at all. I am however having difficulty in getting
> WSJT-X to transmit. I am using a K3s.
>
> I have the K3s set up for Data A (USB) mode operation and have the MAIN:MIC Sel
> set to LINE IN.
>
> On the WSJT software Settings under the <Radio> tab I have selected the K3
> under Rig, set the serial port that I normally use for CAT control (COM 5 in my
> case), I have set PTT method to CAT, the set Mode to None, and set Split
> Operation to None. Not quite sure how to change the Transmit Audio source
> setting as it is greyed out. It is presently set for Front / Mic.
>
> If I hit the TUNE button on the WSJT software my transceiver goes into transmit
> mode but there is no output at all.
>
> Any help/guidance would be greatly appreciate. Thank you in advance.
>
> 73
>
> Serge
>
> VA3SB
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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Richard Ferch-2

Re: K3s/WSJT-X 1.80rc1 TX issue

In reply to this post by Serge_VA3SB

Hi Serge,

The problem is in the audio path, since CAT and PTT are evidently working.

Starting from the software - make sure the correct sound card output is
selected. In view of the fact that you are able to receive and therefore
must have been able to select the correct sound card input, this is likely
not the problem.

In the Windows sound card applet, under the Playback tab, select the sound
card output you are using to send from, click on Properties, select the
Levels tab and make sure the level setting is not at zero. I can't tell you
what the setting should be, except that it should not be zero.

If you are using the K3S's internal sound card (USB Audio codec), make sure
nothing is plugged into the Line In jack on the back of the K3S. If you are
using a computer sound card, make sure the cable between the sound card's
output and the K3S's Line In jack is good.

With CONFIG:MIC SEL set to LINE IN, rotate the K3S's MIC control . You will
see LINE nnn in the bottom of the K3S's display, where nnn is the control
setting - make sure nnn is not zero.

With the the K3S in TX TEST mode, or the PWR control set to zero, or
transmitting into a dummy load, put the software in transmit mode using an
audio frequency in the middle of the bandpass (around 1500 Hz in DATA A).
Adjust the Windows sound card level setting and the K3S's MIC control to
get 4-5 bars displayed on the K3S's ALC meter.

Once you have done that, you should be good to go.

Once it is working, I would suggest that you put the K3S in Split mode and
set Split Operation in WSJT-X to Rig. This will ensure that the software
always transmits using audio between 1500 Hz and 2000 Hz, regardless of
where the received signal is in your IF bandpass.

If you find that using split results in excessive delays in starting to
transmit, the workaround is to turn the K3S's VOX on and set PTT to VOX in
WSJT-X. VOX works very well in DATA A mode (you might have to adjust the
MAIN:VOX GN setting - it should be set high enough to keep the transmitter
on reliably during your transmissions).

73,
Rich VE3KI

On 11/08/2017 15:30, Serge Bertuzzo wrote:
> Hello to the group.
>
> I am receiving no problem at all. I am however having difficulty in
getting
> WSJT-X to transmit. I am using a K3s.
>
> I have the K3s set up for Data A (USB) mode operation and have the
MAIN:MIC Sel
> set to LINE IN.
>
> On the WSJT software Settings under the <Radio> tab I have selected the
K3
> under Rig, set the serial port that I normally use for CAT control (COM 5
in my
> case), I have set PTT method to CAT, the set Mode to None, and set Split
> Operation to None. Not quite sure how to change the Transmit Audio source
> setting as it is greyed out. It is presently set for Front / Mic.
>
> If I hit the TUNE button on the WSJT software my transceiver goes into
transmit
> mode but there is no output at all.
>
> Any help/guidance would be greatly appreciate. Thank you in advance.
>
> 73
>
> Serge
>
> VA3SB
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Jim Brown-10

Re: K3s/WSJT-X 1.80rc1 TX issue

I use VOX for all digital modes. DATA A for all digital modes except
RTTY, where I use AFSK. Works great. As Dick notes, you may have to
adjust VOX Gain to get the rig to go into transmit, just like any other
VOX operation. And, as with all digital operation, it's critical to not
overdrive the radio with too much audio from the computer. Follow
manual instructions for setting level from the computer to the radio and
also for setting Line In gain. Start with a level from the computer in
the range of 25%.

For WSJT-X, I set CAT Control to the port my radio shows up on, set PTT
method to VOX, set Mode to None, and set Split to None. With this setup,
the only thing CAT is doing is setting and reading TX dial frequency
(the frequency of the suppressed carrier in USB mode). The problem with
using CAT for more than that is that Windoze can introduce unacceptable
delays.

73, Jim K9YC

On 8/11/2017 9:49 AM, Richard Ferch wrote:

> Once it is working, I would suggest that you put the K3S in Split mode and
> set Split Operation in WSJT-X to Rig. This will ensure that the software
> always transmits using audio between 1500 Hz and 2000 Hz, regardless of
> where the received signal is in your IF bandpass.
>
> If you find that using split results in excessive delays in starting to
> transmit, the workaround is to turn the K3S's VOX on and set PTT to VOX in
> WSJT-X. VOX works very well in DATA A mode (you might have to adjust the
> MAIN:VOX GN setting - it should be set high enough to keep the transmitter
> on reliably during your transmissions).

Wes Stewart-2

Re: K3s/WSJT-X 1.80rc1 TX issue

In reply to this post by Serge_VA3SB

What are the settings on the "Audio" tab?

Mine are Input : Microphone xxx USB Audio CODEC
Output: Speakers xxx USB Audio CODEC

Wes N7WS

On 8/11/2017 7:30 AM, Serge Bertuzzo wrote: