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Farm Machinery
Precision Farming & GPS
Topcon AGI-4 NTRIP
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<blockquote data-quote="James 6920" data-source="post: 5059798" data-attributes="member: 658"><p>Evening all, currently running the above receiver on a 3 network SIM card, for RTK correction,but it’s not great, compared with radio base station, the correction via NTRIP seems very unstable, with the HDOP figure fluctuating around erratically all day and at times rendering the auto steer useless due to constant large crosstrack error changes, but on one occasion it worked faultlessly for at least 6 hours solid with no issues. </p><p>Would this behaviour be due to patchy mobile signal or is this a common trait of running “cellular data based” RTK with AGI-4?? We do run John Deere MRTK via a variety of different SIM card providers, and they do not behave in the way the Topcon is at the moment, I am well aware the the John Deere system does go in to “RTK-X” and if signal is not acquired will fall back to SF2, where as Topcon has no fall back at all. </p><p>Any help most helpful, and comments appreciated.</p></blockquote><p></p>
[QUOTE="James 6920, post: 5059798, member: 658"] Evening all, currently running the above receiver on a 3 network SIM card, for RTK correction,but it’s not great, compared with radio base station, the correction via NTRIP seems very unstable, with the HDOP figure fluctuating around erratically all day and at times rendering the auto steer useless due to constant large crosstrack error changes, but on one occasion it worked faultlessly for at least 6 hours solid with no issues. Would this behaviour be due to patchy mobile signal or is this a common trait of running “cellular data based” RTK with AGI-4?? We do run John Deere MRTK via a variety of different SIM card providers, and they do not behave in the way the Topcon is at the moment, I am well aware the the John Deere system does go in to “RTK-X” and if signal is not acquired will fall back to SF2, where as Topcon has no fall back at all. Any help most helpful, and comments appreciated. [/QUOTE]
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Farm Machinery
Precision Farming & GPS
Topcon AGI-4 NTRIP
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