The US Coast Guard issued a bulletin <https://mariners.coastguard.blog/2020/06/29/coast-guard-discontinues-differential-gps-broadcast/> stating that it is discontinuing its broadcast of differential GPS (DGPS) signals after 25 years. With the improved accuracy and integrity of un-augmented GPS over the last several years, and with the introduction of the US-operated satellite-based augmentation system known as Wide Area Augmentation System (WAAS), the maritime community no longer has a mission requirement for DGPS. GPS now provides sufficient positional accuracy to meet international navigation requirements for harbor approaches and to position Federal Aids to Navigation (ATON). (6/29/20) [ https://mariners.coastguard.blog/2020/06/29/coast-guard-discontinues-differential-gps-broadcast/ ]. https://www.facebook.com/leezeforsale/ http://leezeforsale.com https://whereisleeze.blogspot.com/ leezerphtrawlerforsale@gmail.com