Here is a new digital mode that comes to you from the makers of JT-9 and JT-65.. Called FT-8 (Franke-Taylor design, 8FSK modulation)
A weak signal mode that is not as sensitive to JT-65/9 but definitely something that will work when voice and CW will not. This is an introduction to someone who has never heard of it, or never has used JT-65 before. It may not be for everyone, but everyone should try it.
Watch FT-8, The New HF/6m Digital Mode, Introduction For Beginners
(as read on Southgate ARC)