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i3ntu
Utente Medium
Regione: Veneto
Prov.: Verona
214 Messaggi |
 Inserito il - 14 ottobre 2010 : 12:59:44
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Da ieri il NOOA15 E NOOA17 sino scambiati le frequenze di trasmissione
137.500 MHz ----> NOOA17
137.620 MHz ----> NOOA15
TESTO ORIGINALE
NOAA-15/17 Frequency change
APT Transmitter Changes on NOAA-15 and NOAA-17
Product(s) or Data Impacted: APT Services on NOAA-17 and NOAA-15
Date/Time of Initial Impact: October 12, 2010, Time 1500 UTC
Date/Time of Expected End: Indefinite
Length of Outage: Not Applicable
Details/Specifics of Change:
The NOAA/NESDIS Office of Satellite Operations has announced the
following: The APT services on NOAA-15 and NOAA-17 will modified for the
morning mission. Performance of the NOAA-17 AVHRR Scan Motor is causing
bar-coding in the imagery once again. Increases in the scan motor current
has caused the scan lines to be out of synchronization. This in effect
produces no good images and will continue until the current returns to
nominal. Therefore, NOAA will swap the APT beacon frequencies on NOAA-17
and NOAA-15. The new APT transmitter configuration for the AM spacecrafts
will be:
NOAA-15
- APT 137.62 MHz
NOAA-17
- APT 137.50 MHz
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NOOA15 & NOOA17
