SXBlue III. The SXBlue unit was fusing GPS and GLONASS, but in addition, there are lists of public stations that anybody can tap to. Take a look at this: http

SXBlue III. The SXBlue unit was fusing GPS and GLONASS, but in addition, there are lists of public stations that anybody can tap to. Take a look at this: http://gpsworld.com/finally-a-list-of-public-rtk-base-stations-in-the-u-s/ http://gpsworld.com/finally-a-list-of-public-rtk-base-statio...