--- In digitalradio@yahoogroups.com, KH6TY <kh...@...> wrote: > > I think there are valid reasons for the FCC only allowing spread > spectrum above 222 Mhz (where there is plenty of room!). A single spread > spectrum signal on HF may go unnoticed by most stations, but what > happens if 100 (in range) are on at the same time? The statistical > chances that where will be QRM on your frequency are much higher, the > more stations that are on. >
You are talking about real, 20kHz or more wide spread spectrum though, aren't you? If it's only as wide as a voice signal, it's causing no more harm than a voice signal (and it probably isn't spread spectrum according to at least some learned opinions.) Julian, G4ILO
