![]() It sort of reminds me of when I was once asked to be part of a team watching a particular window in a particular apartment building to see if the light was on at a certain time. By very carefully syncing the transmitter and receivers software the receiver can complete reception below any normal communication mode. The mode is interesting as it is much about very precise timekeeping as anything. There are a good many people having a stab at running JT65 ( ) You can read more about NSIT Time services at Link: WWVB Radio Controlled Clocks This would seem to be a good workaround for high latency remote connected PCs, as what happens with many satellite ISP services. In theory the WWVB service could achieve 0.20 ms accuracy in sync, but this is fairly loose compared to some other time options.Įven at the end 2/10th second accuracy with twice daily full WWVB Sync JT65-HF should work (see: JT65-HF Source Document )Ī WWVB receiver as a USB dongle for a non-internet connected PC? Usually consumer gear only truly syncs one in 24 hours with a sub-second accuracy over the course of a day. Link: New NIST Time Code to Boost Reception for Radio-Controlled Clocks.Ĭould this be put to use for Amateur Radio? Is it accurate enough for time sync sensitive digital protocols like JT65? Would certainly seem to be potential option for a non-internet time sync. For example, appliances such as refrigerators, microwave ovens and thermostats, as well as traffic light timers and sprinkler systems will be able to take advantage of this new phase modulation broadcast. This new time broadcast protocol will not only improve the performance of new radio-controlled clocks and watches, but will encourage the development of new timekeeping products that were not practical with the old broadcast system because of local interference or other limitations. time in ways that will enable new radio-controlled timepieces to be significantly more robust and reliable. The National Institute of Standards and Technology (NIST) is changing the way it broadcasts time signals that synchronize radio-controlled “atomic” clocks and watches to official U.S. A recent announcement focuses on consumer use of an enhanced time signal:
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