[time-nuts] Why a 10MHz sinewave output?
jimlux at earthlink.net
Mon Feb 6 14:37:59 UTC 2012
On 2/6/12 6:14 AM, paul swed wrote:
> Indeed the long cable runs are tough. Though today we have differential
> cable drivers that do quite well to the Ghz range. But certainly back in
> the dark ages the sine wave was a very reasonable way to go.
we may have GHz bandwidth drivers, but that doesn't solve the issue of
frequency dependent propagation through a cable. At lowish frequencies
(<100 MHz) I'd suspect that the difference is more one of amplitude than
phase, but still, it's something that has to be dealt with.
One could just have a narrow band filter at the receiving end to pick up
only the fundamental, but then, why not just send only the fundamental.
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