FT8 Audio Issue

rmk5@gmx.de
Posts: 3
Joined: Tue Nov 07, 2023 7:06 am

FT8 Audio Issue

#1

Unread post by rmk5@gmx.de »

Hi together,

while working with FT8 I am using the signal transfered from the SDR Console to the WSJTX software by a virtual audio cable.

After some transmissions the audio connection breaks down and the FT8 software didn't get any audio signal. When you switch back to the loudspeaker audio also there is no audio signal available. The rest of the SDR console is working weill but without audio signal.

I am using the SDR Console with a RSP1A SDR and WSJTX Software.

SDR Console Version V3.1
WSJTX Software Version 2.6.1

For the audio transmission form the SDR Console to the WSJTX software I am using a virtual cable "VB-Audio Virtual Cable".

I tried already the following:

1. Using another virtual cable
2. Using SDR Console software V3.1 instead of V3.2
3. Using another FT8 software like JTDX
3. Taking the RSP1A out of the box where all devices for QO100 are built in
4. Shorten the USB cable PC -> RSP1A from 10m to 1m

But all these actions didn't solve the audio issue.

Have you got any idea what the problem could be ?

For your sopport thanks in advance.

Regrads
Dirk

Max
Posts: 831
Joined: Thu Aug 13, 2020 9:47 am

Re: FT8 Audio Issue

#2

Unread post by Max »

rmk5@gmx.de wrote: Tue Nov 07, 2023 7:30 am I am using the SDR Console with a RSP1A SDR and WSJTX Software.

SDR Console Version V3.1
WSJTX Software Version 2.6.1

Have you got any idea what the problem could be ?

For your sopport thanks in advance.

Regrads
Dirk
Dirk. Not sure where the exact issue lays but you are using a VERY old version of SDRC (3.1).

Before you take anything further in analysis, strongly suggest you upgrade to the latest Beta 3.3. This is fully tested by the test team. I use it regularly with SDRC/WSJT-X on FT8 and all other modes with several VACs to and from. No issues at all.

Simon makes constant updates (sometimes daily) to SDRC so it's been through a good many changes since 3.1. Do that first then report back. No need to uninstall. Just install new version over the top of the old:

https://www.sdr-radio.com/download#Beta

Also check that your whole audio system and all associated hardware (soundcard/VAC etc) is set to 48kHz sample rate throughout. Using 44.1 or mixing sample rates often causes issues. SDRC is designed around 48kHz audio rate.

Max

rmk5@gmx.de
Posts: 3
Joined: Tue Nov 07, 2023 7:06 am

Re: FT8 Audio Issue

#3

Unread post by rmk5@gmx.de »

Hi Max,

I installed V3.3 version of SDR Console and it seems it is working now.

I will monitor and come back to you if the issue appears again.

For your fast help thanks a lot.

Best Regards
Dirk

Max
Posts: 831
Joined: Thu Aug 13, 2020 9:47 am

Re: FT8 Audio Issue

#4

Unread post by Max »

rmk5@gmx.de wrote: Fri Nov 10, 2023 7:51 am Hi Max,

I installed V3.3 version of SDR Console and it seems it is working now.

I will monitor and come back to you if the issue appears again.

For your fast help thanks a lot.

Best Regards
Dirk
Good to hear now working.

73

Max

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