Plenty of web documents discuss the shutdown of many US DGPS stations on January 15, 2016. For example, http://rntfnd.org/2015/08/20/us-to-shutdown-most-of-dgps/. However, it's now January 16 and I see no evidence of shutdown. Time will tell when/if it really occurs. -- Garry, K3SIW, EN52ta, Elgin, IL