John Deere

StarFire Frequency Migration

Due to an industry reorganization of the L-band spectrum allocation, the StarFire™ network worldwide will migrate frequencies between January and March 2012. All entities using this band in ag-related and other applications will be impacted by the reorganization. Broadcast of StarFire differential corrections on the current frequencies will stop at the end of this migration period on 23 March, 2012.

Users who do not update their receiver or power on their receiver during this timeframe will not be able to pick up StarFire™ corrections on the new frequencies. Depending on the receiver model, the user may need to update software or manually input the new frequency. Dealers should consult AMS DTAC for more information. Producers may contact their John Deere dealer or the Customer Contact Center. The table of new frequencies worldwide is below.

Previous satellite	Old Frequency (MHz)	New satellite	New Frequency (MHz)	Start Date	Change Date
15.5W	1535.170	54W	1539.8425	Done	23-Mar
142W	1535.153	178E	1539.8625	Done	23-Mar
143.5E	1535.145	143.5E	1539.8925	Done	23-Mar
98W	1545.545	98W	1539.8725	Done	23-Mar
64E	1545.545	64E	1539.8725	Done	23-Mar
25E	1537.453	25E	1539.8625	Done	23-Mar

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Solar Activity

• Two solar eruptions occurred on 6 March and are expected to arrive at Earth on 8 March. Disruptions in GPS or differential correction signal are possible. Intermittent low-intensity solar activity is expected through the rest of March. The second half of the month could see minor storm levels.

John Deere Tools:

• Satellite Predictor: http://navcomtech.com/Support/Tools/satellitepredictor/main.cfm
  • Note – Satellite Predictor now includes anticipated coverage of GLONASS satellites
• StarFire Network status (update times in DD/MM/YYYY): http://www.starfirenetwork.com/index.php

Dealers please see DTAC solution 84045 for additional information

For current conditions and to receive industry alerts:

• US Air Force DOP predictions: https://gps.afspc.af.mil/gpsoc/PerformanceReports.aspx
• Includes a daily map of high PDOP values worldwide. Shows all past history and 3 days into the future.

• NOAA atmospheric indices: http://www.swpc.noaa.gov/alerts/index.html
• K-indices chart – gives weather activity for last 7 days
• A-indices chart – gives solar activity for last 7 days

• NOAA weekly space weather forecasts: http://www.swpc.noaa.gov/weekly/index.html
• View latest report. 27 day outlooks are provided in text format on Page 1 and in chart format on Page 4.