ORIGINAL MESSAGE: On Sat, 23 Mar 2013 16:15:17 -0400 (EDT), K9OM wrote: > (though I prefer to use my 400hz >roofing filter with a 400hz DSP setting as it copies signals better) REPLY: My experience has been that 400 Hz is a bit wide for RTTY during a contest. Try 300 and see if that helps things. 73, Bill W6WRT