Centre county Pennsylvania, USA | We have used Gamin 16A with WAAS for yield mapping. it's very good yield mapping DGPS receiver but it has about 3 times greater error than Novatel's Smart antenna. Both are low cost DGPS smart antennas that use WAAS corrections Here is link to Novatel smart antenna info from same reseller.
http://www.navtechgps.com/supply/smartant.asp Both Garmin 16A and Novatel smart antenna have free documentation and programming software. My experience with both is that Novatel documentation and programming software is difficult to read and use, Gamin's is very user friendly. We are currently using Trimble's EZGuide plus and JD's Starfire DGPS receivers for all DGPS field guidance operations.
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