Coverage
1 stateState-run network for Michigan.
Plans & pricing
FreeFree
- Contract / terms
- Free; NTRIPThe standard way RTK corrections are sent over the internet. Think of it as internet radio for correction data.More only, must send GGAA short message your rover sends with its rough location. VRS and nearest-station streams need it to know where you are.More every 30 s
- Constellations
- GPSThe US satellite navigation system. People often use "GPS" to mean all satellite positioning.More, GLONASS, Galileo, BeiDou (RTCMThe common format RTK corrections are written in, so different brands can understand each other.More.2 MSMMultiple Signal Messages. A newer kind of RTCM 3 message that carries all satellite systems and signals.More)
- Correction formats
- RTCM 2.3, RTCM 3.1, RTCM 3.2 MSM
NTRIP caster
host148.149.0.87 (per Seiler table)
PortA number that tells your device which "door" on the caster server to use. For NTRIP it's often 2101.More10000-10006 (MSRN port scheme)
mountsNetwork_Solution_RTCM3-GG
Operator lists RTKReal-time kinematic. A way to make GPS accurate to about an inch by getting live corrections from a nearby base station.More as FREE. NTRIP only, on ports 10000-10006 (host given after login).
Checked 2026-10-16 Sources: [1] [2] · Blank fields mean the operator doesn't publish it · Report a change
Reliability reports
Collecting soonNo user reports yet for MDOT CORSContinuously Operating Reference Station. A permanent GPS receiver that records satellite data all day, every day.More. We only show real reports from real users, never sample data. Report collection opens soon, and here's what we'll ask:
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