NOAA-17, All Instruments,Telemetry Drift Correction, Implementation Date 20 September 2006- Issued: Date issued 13 September 2006; time issued 18:30 UTC

TIROS Information Processor (TIP) will be switched from side 1 to side 2.

*Date/Time(UTC) Message Issued:*
13 September 2006 18:30 UTC

*Satellite(s) Involved:*

*Instrument(s) Involved:*
All Instruments

*Product(s) Involved/Affected:*
All Products

*Date/Time(UTC) of Initial Implementation:*
20 September 2006 15:02 UTC

*Details/Specifics of Change:*

SOCC has reported that the analog TIP telemetry is drifting on NOAA-17 in a similar fashion that it did on NOAA-14, NOAA-15, and NOAA-16. Therefore, on 20 September 2006 we are planning to switch NOAA-17's TIP from side 1 to side 2 to remove any drift that has accumulated. Since the TIP switch will affect all telemetry and data, we will lose instrument recordings for part of that contact; most likely on the order of 5-10 minutes of data lost. Some of this data not recorded on the data tape recorders will be captured from HRPT. Data playbacks will be unaffected. Real time APT data users should be unaffected since no APT data comes from the TIP.

The pass for the TIP switch is scheduled for 20 September 2006 at 15:02 UTC. The contact is on rev 22036 at Wallops CDA.

With the switch from side 1 to side 2 the TIP ID in minor frame word 2 will change from 0xB (1011) to 0xC (1100) for TIP 2

*Contact Person(s) Name/Email/Phone Number for Questions:*
Emily Harrod
Physical Scientist
301-457-5247 ext 117

Cecil A. Paris, PMP
Physical Scientist
301-457-5247 ext 129

*Web site(s) that contain other relevant information (where applicable):* - History of level 1B notices - All user notices - SOCC polar satellites status - SOCC morning reports

* Emily D. Harrod
* Product Systems Branch
* Pre-Product Processing Group
* E/SP13, Federal Building #4, room 0318
* 5200 Auth Road
* Suitland, Maryland 20746-4304
* voice 301-457-5247 ext 117
* fax 301-457-5199
* email