Best practices question
hmurray at megapathdsl.net
Wed Jun 26 09:28:02 UTC 2019
> I'm in the Pacific, looking at JYY.
How far from Japan? What is their antenna pattern? What is your local noise
I think they are on 75 KHz. If you run out of other ideas, try one of the
simple WWVB modules and replace the crystal. You will have to re-tune the
ferrite rod antenna.
> Thermal-regulated RTCs and rubidium packages for GPS outages?
The GPSDO term is holdover. The general idea is to keep time within specs
until the fix-it guy gets there. Good crystals (aka oven required as well as
a good crystal) are good enough for cell towers. Typical numbers are a few
microseconds over 24 hours.
Your suggestions are interesting for holdover. They aren't very interesting
for stratum 0 clocks.
These are my opinions. I hate spam.
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