After a series of successful test transmissions, the latest version of ROS-3-6-1 (at the moment) now has the MF mode included , this allows live key board qso's at a data rate close to 500/8 and also has a baud-1 mode with enhanced s/n performance , transmission via non-linear systems is possible , though the logic drive of calss e/d will still present problems.
To comply with the EU 100 Hz data bandwidth of the 500Khz permits the mode is coded to occupy less than 100 Hz , the first custom mode to be produced to enable data communications with in the EU on MF The first on air qso over 200 miles is listed > http://lfistes.erst.azerttyu.net/viewtopic.php?f=17&t=1982&sid=5f68ac5172a5c1206214df5b03c2bc50 Its quite possible that the 100 Hz mode will function well over HF over the polar paths where psk tends to fail ? G ..
