Thanks Pete So they have a station in boston I would have volunteered but the email they give did not actually work and really did not have a chance to call them. Lame excuse
On Tue, Mar 27, 2012 at 1:49 PM, Pete Lancashire <[email protected]>wrote: > From GPS World > > This week, UrsaNav once again transmitted from the former USCG Loran > Support Unit (LSU) facility in Wildwood, New Jersey. To ensure that > those interested understand that the USCG has no intent to acquire, > operate, or provide a wireless time technology or services, UrsaNav > has renamed the LSU — it's new facility name is the Diamond Beach > Facility, or “dBF.” > > In a statement released today, UrsaNav said: > > "Our main purpose for on-air testing at this time is to demonstrate > wide-area precise time distribution using terrestrial, ground-wave RF > solutions. However, a robust timing solution uses on-signal data > channel(s) for nanosecond-level corrections, so we are also testing a > variety of modulation techniques that provide significant throughput > gains over the current 100-180 BPS methods. > > "Our current equipment suites consist of the Nautel NL Series > prototype transmitters, Symmetricom Timing and Frequency Equipment > (TFE), and UrsaNav UN-150 eLoran Timing Receivers. > > "We are not simply transmitting eLoran. We are also evaluating some > improvements to eLoran that do not change the underlying signal > structure. Finally, we are testing various alternative LF solutions > that include new waveforms and modulation techniques. > > "We have established preliminary monitor sites at five locations: > Boston, Massachusetts; Chambersburg, Pennsylvania; Leesburg and > Chesapeake, Virginia; and Charleston, South Carolina. We are scouting > for additional monitor sites at distances of up to 1,500 miles from > our current transmitting location. > > "During this week’s testing, we tightened the synchronization of our > transmissions to within 10 ns of UTC. We tested continuously for > periods in excess of 24 hours. Without the use of any propagation > corrections or differential monitoring, we successfully demonstrated > UTC traceability to within +/- 30 ns at 160 miles and to within +/- 70 > ns at 500 miles. Several acquisition trials showed that our receivers > can very quickly acquire the LF signal and steer to within 50 ns of > UTC. At all distances, our receivers met the ITU and ETSI Maximum Time > Interval Error (MTIE) masks for Primary Reference Clocks. > > "Additional on-air tests are planned for next week, so stay tuned for > the third part of our continuing series on wide-area timing." > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
