Two new digital protocols designed specifically for the 630-meter and 2200-meter bands are included in the latest "candidate release" of the WSJT-X software suite. The ARRL Letter reports that test transmissions of FST4 and FST4W in recent months have resulted in many intercontinental contacts on the bands. FST4 is for two-way contacts and FST4W is designed for beacon-type transmissions such as WSPR (Weak Signal Propagation Reporter - see this month's "Digital Connection" column for more on WSPR). Developers say current users of other WSJT modes should find using the new modes to be straightforward.
