I vaguely recall the terms, hopefully correctly. High speed on copper, for networking anyway, has gone all analog now. That's more of a 'broad'-band (in the l

I vaguely recall the terms, hopefully correctly. High speed on copper, for networking anyway, has gone all analog now. That's more of a 'broad'-band (in the literal sense) than 'base'-band (in the single frequency, off/on) sense. Edit: The Wikipedia page for broadband says it better: "The key difference is that what is typically considered a broadband signal in this sense is a signal that occupies multiple (non-masking, orthogonal) passbands, thus allowing for much higher throughput over a single medium but with additional complexity in the transmitter/receiver circuitry." -- https://en.wikipedia.org/wiki/Broadband https://en.wikipedia.org/wiki/Broadband