I know it's supposed to have better range and signal quality, but I thought accuracy was about the same. The variables that affect accuracy are mostly external to the signal itself (propagation delay affected by atmospheric conditions).
You are correct, but the what I read from NIST is that the Enhanced (PM) format " will allow faster and more accurate synchronization, as well as further address reception at particularly low SNIR." So perhaps I should have said better "resolution" rather than "accuracy". :) John John Souvestre - New Orleans LA -----Original Message----- From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of Chris Adams Sent: 2016 May 12, Thu 21:21 To: nanog@nanog.org Subject: Re: NIST NTP servers Once upon a time, John Souvestre <john@souvestre.com> said:
The Enhanced WWVB signal has better range and more accuracy, but I don't know if any receivers are available yet.
I know it's supposed to have better range and signal quality, but I thought accuracy was about the same. The variables that affect accuracy are mostly external to the signal itself (propagation delay affected by atmospheric conditions). At one point, they were going to put a second transmitter closer to the east coast, and it was going to be at the Army's Redstone Arsenal, next to Huntsville, AL, where I live; I probably could have put a receiver in a steel box and still had good signal! NASA vetoed it though. -- Chris Adams <cma@cmadams.net>