Turns out that the problem with FT8 TX not sending out any signal was due to this line in the sun8i codec module in the Linux kernel:
Once I commented that line out, I could hear the typical FT8 sound coming out from the speaker, and I could see it on the waterfall.
It looks like that line was added to the sun8i code as part of this commit:
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I just pushed the patch to fix that issue to the X6100 buildroot version 2024.11 repo:
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Markus,
when you have time, please run a 'git pull', rebuild the kernel, and let me know if FT8 TX works for you.
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After this issue is confirmed fixed, I'll start working on a GitHub workflow to create an SD card image similar to Georgy's, so others can try it too.
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73,
Franco
