JS8Call is software dependant on WSJT-X but created for the JS8 digital mode which makes it possible for weak signal QSOs on HF, employing a keyboard messaging style interface (“live” QSO’s possible, not only macro dependent exchange of grid and signal strength). Owning employed WSJT File/H on an expedition (A35EU) https://mshvmodeft843086.madmouseblog.com/3829487/not-known-factual-statements-about-ft4-mode