Hello, first time in this group.
I have been using WSJT for many years in a row for different
purposes, but now I am faced with a problem associated with my laptop.
As I understand it, WSJT uses the left channel to receive audio from
the transceiver. How to switch the program so that it reads the right
channel from the stereo plug. In WSJT-X there is a choice of channel
from the setup. In WSJT - no. Maybe this is possible in the
configuration file? Who knows? Thanks.


--
Best regards,
Oleg A65BR mailto:a65br@...

Hello - I have a similar need, although for a different use case -

I would like to run two instances of WSJT-X on the same machine (I expect this is another topic; initially I'd like to see if the two-audio-source problem is solvable), one taking audio from the left channel, one from the right channel. My application is to compare two separate receivers/antennas tuned to the same frequency. I do not see any option in WSJT-X (I am using version 2.2.2 on Windows 10 64-bit) to select from which "side" of audio WSJT-X accepts input audio for processing.

In searching the group, I've not immediately found a reference to separating two audio sources arriving on a stereo audio input device.

Thank you for any follow-up questions or advice.

Hello - I have a similar need, although for a different use case -

I would like to run two instances of WSJT-X on the same machine (I expect this is another topic; initially I'd like to see if the two-audio-source problem is solvable), one taking audio from the left channel, one from the right channel. My application is to compare two separate receivers/antennas tuned to the same frequency. I do not see any option in WSJT-X (I am using version 2.2.2 on Windows 10 64-bit) to select from which "side" of audio WSJT-X accepts input audio for processing.

In searching the group, I've not immediately found a reference to separating two audio sources arriving on a stereo audio input device.

Thank you for any follow-up questions or advice.

Hi David,

it doesn't sound like you have tried what you want to do, there are no issues with doing the things you wish.

Multiple instances of WSJT-X on he same PC, see item 2 in the FAQ section of the WSJT-X User Guide:

https://physics.princeton.edu/pulsar/K1JT/wsjtx-doc/wsjtx-main-2.2.2.html#FAQ

Selecting the audio channel for reception:

I don't understand why you see any need to "separate" audio channels from a stereo audio stream since multiple applications can consume the same stream, whether using the same channel or different ones.

73
Bill
G4WJS.

I do not see any option in WSJT-X (I am using version 2.2.2 on Windows 10 64-bit) to select from which "side" of audio WSJT-X accepts input audio for processing.

Immediately on the right end of the Input line is a selection box
("drop down") that allows the user to select Mono | Left | Right
or Both.

Just make sure that Windows initializes your sound card input
(mic, or Line) as a 2 channel device. See Windows Sound Control
Panel -> Recording -> <selected input endpoint> -> Advanced.


73,

... Joe, W4TV


On 2020-12-10 12:28 PM, David Feldman via groups.io wrote:

Hello - I have a similar need, although for a different use case -
I would like to run two instances of WSJT-X on the same machine (I expect this is another topic; initially I'd like to see if the two-audio-source problem is solvable), one taking audio from the left channel, one from the right channel. My application is to compare two separate receivers/antennas tuned to the same frequency. I do not see any option in WSJT-X (I am using version 2.2.2 on Windows 10 64-bit) to select from which "side" of audio WSJT-X accepts input audio for processing.
In searching the group, I've not immediately found a reference to separating two audio sources arriving on a stereo audio input device.
Thank you for any follow-up questions or advice.

Hi David,

This is a bit outside the normal WSJTX group issue, but here it goes. As Bill already stated WSJT-X does not support a two source solution. In you comparison you need two receivers and antennas. Just add two instances of WSJT-X (perhaps in two PC as I have done) and you will get two ALL.txt files. Those files will be different firstly due two independent decoders and secondly due to the actual antenna comparison. Decoders will decode signals in different order by design.

For comparison you need to process ALL.txt files in a proper manner depending what you want to know about those receivers/antennas. There is a challenge to correctly interpret comparison results as all we got are S/N values per station. If you are more interested I put a link here for some results. Unfortunately it is in Finnish, but there are some pictures: http://www.oh3ad.fi/ and select the green link on main page saying 'Rixun Kolmoset julkaisut täältä' and select Rixun Kolmonen 2_2020 Nov 24, 2020.
73, Reino OH3mA

OK thank you everyone - this is extremely helpful. I am beginner in WSJT so I had not fully explored the software. The information and references I am sure will let me configure my two-receiver application.

Thank you again!