On Wed, May 8, 2019 at 11:12 PM Eric S. Raymond <e...@thyrsus.com> wrote:
> Chris Adams <c...@cmadams.net>: > > Once upon a time, Royce Williams <ro...@techsolvency.com> said: > > > The La Crosse 404-1235UA-SS UltrAtomic (not affiliated, just a fan) > tracks > > > DST - and even leap seconds. They have much better reach than previous > > > similar clocks. > > > > Looks like somebody finally brought a clock to market that uses the > > new-format phase-modulated signal. Hopefully there'll be more, but with > > the WWVB funding threats, I wouldn't be surprised if companies don't > > want to invest in any new products that use it. > > Interesting - first device I've heard of that uses the new-format > fine modulation, and as NTPsec's tech lead I keep as close an eye on such > developments as anybody. > > Before this I had thought that a combination of clock vendors feeling > burned by > the modulation change and cheap GPSes entirely killed the market for > devices that > can get high-precision time from WWBV. > > Anybody know of anything fitting that description that you might want > to deploy in a data center as a Stratum 1? If such a creature exists I > shall > contrive to get my lunch hooks on one and write a driver for it. That would be fantastic. I mentioned it on Freenode when it first came out - but it may have escaped your attention. :) An eBay search for "EverSet ES100 WWVB BPSK Phase Modulation Receiver Kit" should prove fruitful. I have one - but I haven't had time to tinker with it yet. The kit comes with the double-antenna setup that appears to be key to the improved reception. In the clocks, the antennas are at 90 degrees relative to each other. Royce
