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Physical Measurement Laboratory / Time and Frequency Division

Time Realization and Distribution Group

2003 WWVB Broadcast Outages

During normal operation, the 60 kHz signal from WWVB is transmitted 24 hours per day, 7 days a week. The table includes all periods since January 1, 2003 when the signal was turned off or intermittent for more than 5 minutes.

Date	MJD	Began (UTC)	Ended (UTC)
12-27-2003	53000	0507	0548
11-29-2003	52972	1800	1910
11-15-2003	52958	0512	0620
11-11-2003	52954	1830	1920
10-29-2003	52941	1013	1112
10-20-2003	52932	0808	0916
10-19-2003	52931	1750	1905
10-19-2003	52931	0325	0420
10-14-2003	52926	0027	0118
10-13-2003	52925	0945	1053
09-19-2003	52901	0408	0428
09-19-2003	52901	0014	0048
09-18-2003	52900	1221	1312
09-15-2003	52897	0825	0930
07-24-2003	52844	0522	0546
07-06-2003	52826	0730	0808
07-04-2003	52824	1025	1100
07-03-2003	52823	Various*	Various*
07-02-2003	52822	Various*	Various*
07-01-2003	52821	Various*	Various*
06-30-2003	52820	Various*	Various*
06-27-2003	52817	Various*	Various*
06-26-2003	52816	Various*	Various*
06-25-2003	52815	Various*	Various*
06-24-2003	52814	Various*	Various*
06-23-2003	52813	Various*	Various*
06-18-2003	52808	0912	0942
06-01-2003	52791	2250	2348
05-26-2003	52785	2040	2203
05-22-2003	52781	0404	0452
05-19-2003	52778	0933	1054
04-23-2003	52752	1329	1336
04-18-2003	52747	0118	0155
04-06-2003	52735	0713	0818
02-17-2003	52687	1100	1140

* Numerous short outages while station was undergoing maintenance and testing during daylight hours.

WWVB operated at reduced power during the time periods listed in the table below. The station normally outputs 50 kW.

Date	MJD	Began (UTC)	Ended (UTC)	Power Level
12-02-2003	52975	1500	2345	29 kW
12-01-2003	52974	1500	2345	29 kW
11-28-2003	52971	1500	2345	29 kW
11-26-2003	52969	1500	2345	29 kW
11-25-2003	52968	1500	2345	29 kW
11-24-2003	52967	1730	2345	29 kW
11-21-2003	52964	1802	2337	29 kW

Time and frequency

Created February 17, 2016, Updated January 9, 2017