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387 NOUS40 KWBC 131218 FOS/NOAAPORT NOTICE NO. 1740 JULY 13... 2000 ATTENTION FAMILY OF SERVICES SUBSCRIBERS/NOAAPORT USERS SUBJECT SINGLE CHORD OPERATIONS GOES SINGLE CHORD OPERATIONS... MADE NECESSARY BY LUNAR AND SOLAR INTRUSIONS AT THE EDGE OF THE EARTH DISK... IMPACT NAVIGATION AND REGISTRATION FOR SHORT PERIODS. USERS OF GOES GVAR DATA WILL SEE VARIABLE ERRORS DURING PERIODS OF SINGLE CHORD OPERATIONS AS NOTED BELOW. SINGLE CHORD OPERATIONS FOR THE BEVEL EFFECT ARE LISTED WHEN APPLICABLE. BEVEL EFFECT OPERATION IS INTENDED TO AVOID A SEASONAL SPACECRAFT POINTING PROBLEM WITH ALL GOES SPACECRAFT CAUSED BY THE SUN/APOSTROPHE/S LIGHT REFLECTING INTO THE EARTH SENSOR. FOLLOWING ARE TIMES OF GOES-8 SINGLE CHORD OPERATIONS FOR THE PERIOD JULY 10... 2000 TO AUGUST 08... 2000. LUNAR INTRUSIONS 07/21 1923 TO 2214 UTC 08/03 0237 TO 0917 UTC BEVEL 08/07 0237 TO 0707 UTC 08/08 0237 TO 0707 UTC SOLAR INTRUSIONS NONE FOLLOWING ARE TIMES OF GOES-10 SINGLE CHORD OPERATIONS FOR THE PERIOD JULY 10... 2000 TO AUGUST 08... 2000. LUNAR INTRUSIONS 07/20 2246 TO 0137 UTC 07/24 0100 TO 0402 UTC 08/03 0713 TO 1322 UTC BEVEL 07/31 0713 TO 1153 UTC 08/01 0713 TO 1153 UTC 08/02 0713 TO 1153 UTC 08/04 0713 TO 1153 UTC 08/05 0713 TO 1153 UTC 08/06 0713 TO 1153 UTC 08/07 0713 TO 1153 UTC 08/08 0713 TO 1153 UTC SOLAR INTRUSIONS NONE TOM RENKEVENS SATELLITE ANALYSIS BRANCH /SAB/ SATELLITE SERVICES DIVISION /SSD/ NOAA/NESDIS THOMAS.RENKEVENS/AT SYMBOL/.GOV END NNNN ---------- End Forwarded Message ---------- L
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