WAAS ALERT  -  WAAS Is Currently Experiencing Technical Difficulties

PAT Inc. is recommending that all users be locked onto PRN 138.  For those users that have GPS receivers with the

ability to track either one of the above PRNs, it would be best to remove 135 as an option. 

For the short term, 138 will be the only option.  Long term, there will be other options. Go to this webpage.