At 08:36 PM 3/28/2008, you wrote: >Why do I find so so many RTTY signals up side down >on the ham bands.
I think it is because many of the sound card programs give you mark high and space low when the rig is using USB. A newbie asks which sideband to use and someone invariably says LSB. USB/LSB depends on which software package that you use and its defaults. I use MixW and to get mark high space low you using the defaults with AFSK, the rig should be set to USB. I don't think many inexperienced operators actually check to see what RF frequencies they are actually transmitting. 73, Mark N5RFX
