I've heard this argument many times, Dave, but whilst it was probably true 10 or more years ago, surely all decent modern transceivers have a dedicated data mode that allows the use of narrow filters? Heck, even the humble FT-817 has one.
Julian, G4ILO --- In digitalradio@yahoogroups.com, "Dave AA6YQ" <aa...@...> wrote: > > The advantage of using FSK is that one can take advantage of the excellent > RTTY filters built into some transceivers. These filters are generally not > available when operating in USB/LSB. This is particularly important to > contesters operating in a crowded environment and DXers dealing with weak > signals.