Electrical Engineering - Re: AM radio: astronomically-high frequency modulator signal present on an astronomically-low frequ

You are viewing an archived Text-only version of the thread. To view this thread in it's original format and/or if you want to reply to this thread please [click here]

Author

Re: AM radio: astronomically-high frequency modulator signal present on an astronomically-low frequ

John Campbell

2007-06-26, 5:25 pm

"Randy Poe" <poespam-trap@yahoo.com> wrote in message
news:1182879904.719658.207550@u2g2000hsc.googlegroups.com...
> On Jun 26, 1:35 pm, "John Campbell" <spaml...@spamless.com> wrote:
>
> I don't think I meant anything in particular about the DC component,
> but whether it's zero or there's a bias, I've always heard the
> statement "Ethernet is a baseband network" which means the
> carrier frequency is zero.
>
> - Randy

there is no carrier frequency. It is a baseband signal.

You could put it on one, say a 100 mhz using 10 mbit Ethernet, and you
would have to filter it around 100 Mhz.

If the carrier is too low, then it aliases across 0 frequency and you get
distortion. Like if you put a 100 mbit Ethernet on a 10 mhz carrier.

LinkBot