Scott,

I guess almost everything these days is now angled toward digital signals, as this definition clearly illustrates.

I won't even start the argument about whether to measure bandwidth at -3dB, -10dB, etc. [Linked Image]

For anyone still pondering this, just consider that today's 56.6kbps dial-up modems operate over the same 3kHz telephone bandwidth as did the 300 bps modems of yester-year.

Which brings to mind another related point to remember: Despite what some advertisement may say, bits-per-second and baud rate are NOT the same thing.