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FT8 is a digital mode that makes contacts with signals far too weak to hear. The radio connects to a computer running the free WSJT-X program, which decodes every FT8 signal in the passband and shows them as lines of text. Call signs, grid squares and signal reports are exchanged in fixed 15-second turns, and a complete contact takes about a minute. Released in 2017, FT8 has become the most popular mode on HF, though critics point out that it leaves no room for conversation. Read more…