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Re:Open-sourcing a more precise time appliance by KaiserPro on Wednesday August 11, 2021 @09:14AM (#28141593)
Its more about stability in between the PPS from the GPS.

having the MAC means that the 10mhz reference signal is going to almost always be 10mhz, and in any given second contain 10million pulses[1].

However if you're just relying on GPS's PPS and a standard quartz oscillator, then the 10mhz reference is going to wobble about.

[1] this isn't really true, but illustrates the point of stability.

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