[time-nuts] Holdover: Z3801A vs KS-24361
hmurray at megapathdsl.net
Sun Apr 15 06:59:49 EDT 2018
kb8tq at n1k.org said:
>> A KS-24361 says:
>> Predict 394.1 us/initial 24 hrs
> That would suggest the unit is unlocked. It should be below 10 us. Just as
> with the 3801, the estimate is a bit fuzzy. You should be able to see issues
> in the data on the Z3809/Z3810.
It says it is locked and has been locked for days.
>> Locked to GPS TFOM 3 FFOM 0
I used this as a learning exercise for my new TICC. Something is clearly
The reference for the TICC is the crystal in a HP 5334B with the good-crystal
option. It's not calibrated, but there isn't any GPS logic to jerk it
around. I assume the swing is due to temperature. I corrected the slope of
the graph by hand.
Here is a day+ of data:
Here is a zoomed in chunk:
These are my opinions. I hate spam.
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