开云体育

Ok, I'm hoping something is not wrong with the radio but that is looking less and less likely.

I have a Yaesu FT-991a that has been working FB for a few years. The other day I sat down at the shack to do some FT-8 and noticed that I wasn't getting any power out when transmitting.?

I've done system updates which includes kernel updates, obviously rebooting etc. to no effect.

I've also recently changed my desktop speakers from ones that used the on-board audio to providing their own soundcard?via USB-C.?

I can easily use pavucontrol to setup the audio devices and what applications they are attached to and am receiving audio from the radio fine. Even when sending audio to the radio the VU meter built into pavucontrol is showing audio.

I've reviewed the menu settings many times at this point using Dave's guide and can't find any problems.

I have done a full reset on the radio and set everything up from scratch.?

I can turn on the monitor (MONI) and I can hear audio when I use the front mic but not when transmitting digital modes (AND I don't know if that's expected to work).?

I've also tried using a Signalink USB which is configured to use the DATA port of the radio which had the exact same results. Receive audio works fine, no TX audio output.

To summarize...

1. Receive audio works using on-board sound card, TX audio does not.

2. Receive audio works using Signalink, TX audio does not.

3. CAT control works

4. PTT works

Any other ideas before I ship the radio to Yaesu??

Thanks,

Richard

KF5OIM

Richard, I also found these for reference ;

/g/FT-991A/topic/no_usb_tx_audio_on_wsjtx/80986245

regards

Adrian ... vk4tux

On 12/2/25 12:03, Richard Shaw, KF5OIM via wrote:

I avoided putting pictures in my original post but just to add some details...

I've been on Fedora since?version 12 and have been a packager for over 12 years so while I always try to accept the fact that I may have missed something simple, I'm pretty?sure that's unlikely in this case.

For WSJT-X I have used pipewire and configured the audio via pavucontrol as well as selected the audio device manually. No dice...

I've also done the same in Fldigi trying to get PSK to work. Same results.?

As previously mentioned, when I transmit the VU meter under the device does show activity...

The PCM2903B device is the USB sound card for my FT-991a.?

Thanks,

Richard

KF5OIM