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 class 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=5f68ac5172a5c1206\ 214df5b03c2bc50 Scroll down the page ... and you will see the RX station F4DTL was in Paris 650 Km from myself running 20 watts to 35 ft top loaded vertical and round 325 km from Jim running 100 w to a similar array Its quite possible that the 100 Hz mode will function well over HF over the polar paths where psk tends to fail ? G ..
