I think there are two answers to this one, but i'll ask all the same!
Any chance of FT8 mode being included in the U3 firmware.
I know the room in the ATMEGA is tight!? (PI mode anybody still use it???)
I understand this mode is a quick version of JT65 (15 second slots)!
The idea behind this is that it would be possible to fit in another tx mode within a frame.
I'm sure most will have 15 seconds spare, before calibration starts?!
thoughts anybody???
Dean G7EOB