[time-nuts] eLoran test 6 Feb for almost 2 months

Bob Camp kb8tq at n1k.org
Sun Feb 5 08:44:18 EST 2017


For NTP grade timing, there are still a lot of broadcast sources out there. 
You *do* need to be careful about propagation and when to (not) use 
them during the day. Focusing effort on that part of it is probably more
useful than waiting for funding to appear for eLoran….


> On Feb 4, 2017, at 11:51 PM, Ruslan Nabioullin <rnabioullin at gmail.com> wrote:
> On 02/03/2017 10:02 AM, paul swed wrote:
>> Ruslan
>> NH will be easy to pick it up. The core frequency is 3 Cesiums in a
>> cluster. As for time transfer it can but its really a pain in the
>> backend and that information is indeed in the data channel. So make
>> us jealous with your CS and RBs. :-) I am down in Franklin Ma so we
>> are actually close compared to others.
> I'm actually jealous of your LORAN time/frequency metrology capability :).  Apparently UrsaNav (headquartered locally in North Billerica, MA!) are the ones performing these particular aforementioned R&D efforts; I have visited their corporate website and have read about their projects and product portfolio, and have developed a liking for this company (despite being anarchosocialist).  The reason is that philosophically I'm a strong advocate of resilient technology and social policies, and consequently that is the entire purpose of my nonprofit time/frequency metrology and transfer project.  As an example, the redundant timekeeping and NTP transfer minicomputers will be provided with 7--10 WWV and CHU channels received with redundant auto-failover HF antennae, just in case some channels fail (and that is in addition to redundant GPS and of course the set of redundant UPS-, solar-, and generator-backed standards, which hopefully will grow to there being a fused ensemble of two modern Cs standards at any one time, rather than the current scheme of the VXI-based controller simply running one at a time in an auto-failover configuration).
> -Ruslan
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