SDC and Flex Firmware 4.0.1 distorted audio on MacOS 26.1

[Georg Isenbürger]

Hi,

I participated in the WAE RTTY initially with the latest version of SDC and Flex 4.0.1 . The audio was distorted both on receive and transmit to a point where I had problems decoding or being decoded.

Switching SDC off solved the audio problem. I downgraded to Flex 3.9.19 and everything was fine. 

Anybody else ran into a similar issue?

regards

Georg, DJ6GI 

[Tyler Stewart]

Did it also sound bad?

I had borrowed an 8600m using v4 basic and has a problem like that using the B antenna input.  Using RXB input, it was much better but I was on a receive antenna. It’s a little difficult to tell so I just swapped it out cause I had another radio and it was fine but I need to do some more testing on that. I don’t think I have any transit problems That I know of again more testing required

 Ty K3MM 

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[UT4LW Yuri Pavlov]

I had borrowed an 8600m using v4 basic and has a problem like that using the B antenna input.  Using RXB input, it was much better but I was on a receive antenna.

It's strange that the choice of antenna affects sound quality.

Information: If you have turned on the RIG-Audio system and activated the "AGC" function, this may cause distortion in the sound coming from the transceiver jacks.

понедельник, 10 ноября 2025 г. в 15:31:23 UTC+2, tayhi...@gmail.com: