topic Re: How do I improve my horizontal accuracy using the collector app with an external Trimble R10 GPS? in ArcGIS Collector Questions https://community.esri.com/t5/arcgis-collector-questions/how-do-i-improve-my-horizontal-accuracy-using-the/m-p/461662#M7849 <HTML><HEAD></HEAD><BODY><P>I can't speak specifically about the R10, but I am using an R2 connected to a NTRIP correction service and get cm accuracy. &nbsp;The difference is the R2 is specifically supported by Collector via the Trimble GNSS Status App. &nbsp;Perhaps the NMEA adapter isn't passing the corrections properly. &nbsp;It sounds like you are just getting autonomous positions sent to Collector.</P></BODY></HTML> Tue, 06 Dec 2016 17:00:33 GMT AndrewMilanes 2016-12-06T17:00:33Z How do I improve my horizontal accuracy using the collector app with an external Trimble R10 GPS? https://community.esri.com/t5/arcgis-collector-questions/how-do-i-improve-my-horizontal-accuracy-using-the/m-p/461661#M7848 <HTML><HEAD></HEAD><BODY><P>We are using a Trimble R10 as an external GPS for the Collector App by using the NMEA adapter from Aman Enterprises. &nbsp;We are also connected to our local NTRIP corrections service. When we got it all set up an running the horizontal accuracy peaks out at 3.8 ft. &nbsp;We need it to be more accurate than that, and we know the R10 is very capable of delivering the accuracy. &nbsp;Does anyone know a fix for this? &nbsp;We should be getting sub foot accuracy.</P></BODY></HTML> Fri, 02 Dec 2016 19:07:51 GMT https://community.esri.com/t5/arcgis-collector-questions/how-do-i-improve-my-horizontal-accuracy-using-the/m-p/461661#M7848 MarkButler1 2016-12-02T19:07:51Z Re: How do I improve my horizontal accuracy using the collector app with an external Trimble R10 GPS? https://community.esri.com/t5/arcgis-collector-questions/how-do-i-improve-my-horizontal-accuracy-using-the/m-p/461662#M7849 <HTML><HEAD></HEAD><BODY><P>I can't speak specifically about the R10, but I am using an R2 connected to a NTRIP correction service and get cm accuracy. &nbsp;The difference is the R2 is specifically supported by Collector via the Trimble GNSS Status App. &nbsp;Perhaps the NMEA adapter isn't passing the corrections properly. &nbsp;It sounds like you are just getting autonomous positions sent to Collector.</P></BODY></HTML> Tue, 06 Dec 2016 17:00:33 GMT https://community.esri.com/t5/arcgis-collector-questions/how-do-i-improve-my-horizontal-accuracy-using-the/m-p/461662#M7849 AndrewMilanes 2016-12-06T17:00:33Z