The following maintenance tasks with the current operative WAAS satellites are expected during May 2022:

For complete details, see the William J. Hughes Technical Center WAAS Test Team website. Specific dates for when PRN 135 enters service and PRN 138 is decommissioned will be posted to this website as specific dates are determined.

Trimble recommends that WAAS users that are experiencing issues to update to the latest firmware and

manually switch to PRN 131, 133, or 135.

Instructions to Manually Change PRN

Precision-IQ™

1. From the Precision-IQ Home screen, tap the GNSS tile:
   

2. On the GNSS screen, tap the Edit
3. On the GNSS: Edit screen, tap Setup, then tap Correction Satellite Selection.
4. Choose desired WAAS PRN:

FM-750™

1. From the home screen select the Settings wrench:

2.  On the Settings screen, select GNSS.
3. On the GNSS screen, select GNSS Setup.
4. On the GNSS Correction Source screen, select WAAS/EGNOS and tap the green Accept
5. On the WAAS/EGNOS Settings screen, select Satellite.
6. On the Satellite screen, choose the desired WAAS PRN and tap the green Accept

EZ-Guide® 250 and EZ-Guide 500

1. Select the wrench icon:

2. On the Configuration screen, select System.
3. On the System screen, select GPS.
4. On the GPS screen, select GPS Setup.
5. On the GPS Correction Source screen, select WAAS /EGNOS:
   
   

6. On the WAAS/EGNOS Settings screen, select Satellite.
7. On the Satellite screen, choose the desired WAAS PRN:
   
   

FM-1000® and FM-1000+ Integrated Display

1. Select the Wrench/screwdriver
2. Select GPS Receiver, then Diagnostics.
3. Select AgRemote.
4. Enter the administration password: 2009
5. Follow the instructions below for AgRemote Configuration

AgRemote/RDI/Toolbox+ Configuration (AG-372, AG-382, AG-482, NAV-900 Receivers)

1. From the AgRemote home screen press  until Configuration displays:
   
   

2. Press one time
3. Press until DGPS Config
4. Press until the SBAS Sats menu
5. Press to get the satellite name/ RN in edit mode (cursor blinks on PRN 133)

6. Press to make the satellite mode editable (cursor blinks on Auto Heed):
   
   

7. Press  until Disabled displays:
   
   

8. Press to get the cursor blinking on the satellite name (AORE)
9. Press  until PRN 135
10. Press to make the satellite mode editable (cursor blinks on Disabled)
    
    

11. Press until Heed Health
12. Press the Enter button to confirm your changes and to leave the edit
13. Press several times to return to the AgRemote home

For More Information Contact your Precision Field Specialist or your local Precision Farming Support Center.