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<p>You can now use your RTK device to measure points with good (meter) accuracy. If you need extreme accuracy (down to 8mm) continue reading the <ahref="#rtk-crash-course">RTK Crash Course</a>.</p>
<p>To get millimeter accuracy we need to provide the RTK unit with correction values. Corrections, often called RTCM, help the RTK unit refine its position calculations. RTCM (Radio Technical Commission for Maritime Services) can be obtained from a variety of sources but they fall into three buckets: Commercial, Public, and Civilian Reference Stations.</p>
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<p>See <ahref="../correction_sources/">Corrections Sources</a> for a breakdown of the options and the pros and cons of each. For this quickstart, we'll be showing two examples: using PointPerfect for $8 a month (a little less accurate but nation-wide coverage) and PointOne Nav for $50 a month (maximum accuracy, gaps in the coverage area).</p>
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<p>See <ahref="../correction_sources/">Corrections Sources</a> for a breakdown of the options and the pros and cons of each. For this quickstart, we'll be showing two examples: using PointPerfect for $8 a month (a little less accurate but nation-wide coverage) and PointOne Nav for $150 a month (maximum accuracy, gaps in the coverage area).</p>
<p>One of the great features of the RTK Torch is that it has the ability to get corrections from PointPerfect over WiFi. No need for NTRIP credentials! <ahref="https://www.sparkfun.com/rtk_torch_registration" target="_blank" rel="noopener">Contact SparkFun</a> with your device ID, pay a small monthly fee of $8 per month (as of this writing) and your device will obtain credentials and start receiving corrections anywhere there is coverage.</p>
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