Hmm, interesting.
I've been working on the Pi Pico as a USB device with the Tiny USB stack. I wonder if an SSTV dongle would be a thing?
I've been licensed since the 70's so I got a free full ticket in 2005.
G8LKD as you're asking.
I've been bored with the FT8 world (too competitive), so I've been looking for something else.