Martin McCormick wrote: > > [Quoting me:] > > If these transmitters are in the 300-MHz range, by the way, > > the FCC won't allow you to send serial data over the link. > > Can you be a bit more specific? I see all kinds of small remote > control type devices that operate around 300 MHZ and send digital > data. Martin: The FCC makes a very clear distinction between "control" signals and "data" signals. When you press the button on your garage-door transmitter, you're sending a control signal. If you were to use the same transmitter to implement, for instance, wireless PC-to-PC communications, you'd be sending data signals, and you'd be in violation of the FCC rules. -Andy Andrew Warren - fastfwd@ix.netcom.com Fast Forward Engineering, Vista, California http://www.geocities.com/SiliconValley/2499