We have a new fldigi from Dave, w1hkj. After about a month of testing (the AFC limitation would disappear in seemingly random ways) there is now a version where this problem has been solved. The new file (fldigi-1.38.06.emc.nhl.bin.tgz) is available at the download server. The directory is: http://sharon.esrac.ele.tue.nl/pub/linux/ham/pskmail/fldigi/ There are new controls in the configuration->Modems->Psk section. Set the search range to 80 Hz and the AllowableRxCarrierOffset to 20 Hz to start with... 73, Rein PA0R PS: This will enable me to go on working at version 0.5 of the server... now testing at PA0R-1 -- http://pa0r.blogspirit.com