[time-nuts] Segal law: freq difference for GPSDO

[Magnus Danielson]

On 03/30/2016 05:53 AM, Tom Van Baak wrote:
>> May be somebody could recognize, what 10.0000014 Mhz could be used for ?
>
> It sort of looks more like an unlocked OCXO than a magic frequency.
> Measure phase instead of frequency; see how the phase drifts over time.
> Also check if the magic frequency varies or drifts over time.
> See if the offset is constant in spite of a one hour power cycle of either GPSDO.
>
>> Its classical case of Segal's law: "A man with a watch knows what time
>> it is. A man with two watches is never sure". This is exact situation.
>> Now I am not sure which GPSDO (if any) is more accurate.
>
> Yes, and www.leapsecond.com for where this madness ends up.

There is a old movie clip where a guy gets asked why he has three clocks 
on his wrist, and he replies:

One clock run slow,
One clock run fast
and one clock doesn't run at all.

Average that out, and you're pretty OK I guess :P

Cheers,
Magnus