[time-nuts] Low cost synchronization
cfharris at erols.com
Sun Aug 21 08:55:09 EDT 2005
Magnus Danielson wrote:
>>For any solutions that give you stable frequency
>>only (XO, RF carriers, 60 Hz) you will need a way
>>to set the initial time and to reset the time when
>>the batteries fail.
> For some countries will 60 Hz or 50 Hz no longer be maintained on 24 h basis, so it may be
> a bad idea to depend on it.
I keep hearing, on this group, that the powerline is no longer sync'd to utc, and evidence for
that fact being a lack of motorized wall clocks. Well, clocks that sync to the powerline are in
universal abundance in the US. Virtually every clock on kitchen appliances is sync'd this way.
The clocks on VCR's may be reset from time to time by a tv station, but the timing signal is
still the powerline. Basically, any appliance, or device that plugs into the powerline is likely to
use the powerline for its timing function.
More information about the time-nuts