nanog mailing list archives
Re: NTP for ASBRs?
From: Royce Williams <royce () techsolvency com>
Date: Wed, 8 May 2019 23:23:18 -0800
On Wed, May 8, 2019 at 11:12 PM Eric S. Raymond <esr () thyrsus com> wrote:
Chris Adams <cma () cmadams net>:Once upon a time, Royce Williams <royce () techsolvency com> said:The La Crosse 404-1235UA-SS UltrAtomic (not affiliated, just a fan)tracksDST - 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
Current thread:
- Re: NTP for ASBRs?, (continued)
- Re: NTP for ASBRs? Mike Hammett (May 09)
- Re: NTP for ASBRs? Christopher Morrow (May 10)
- Re: NTP for ASBRs? Scott Weeks (May 08)
- Re: NTP for ASBRs? Bryan Holloway (May 08)
- Re: NTP for ASBRs? Brian Kantor (May 08)
- Re: NTP for ASBRs? Bryan Holloway (May 08)
- Re: NTP for ASBRs? Bryan Holloway (May 08)
- Re: NTP for ASBRs? Royce Williams (May 08)
- Re: NTP for ASBRs? Chris Adams (May 08)
- Re: NTP for ASBRs? Eric S. Raymond (May 09)
- Re: NTP for ASBRs? Royce Williams (May 09)
- Re: NTP for ASBRs? Eric S. Raymond (May 09)
- Re: NTP for ASBRs? Bryan Holloway (May 08)
- Re: NTP for ASBRs? Tony Finch (May 09)
- Re: NTP for ASBRs? Mark Tinka (May 14)
- Re: NTP for ASBRs? colin johnston (May 14)