MDOT CORS
Free Michigan DOTDepartment of Transportation. The state agency that runs many of the free state RTK networks.Full definition
Coverage
1 stateState-run network for Michigan.
Everything you need to know
FreeType: State-run network
Price and plans
| Plan | Price | Term |
|---|---|---|
| Access | Free |
- Contract / terms
- Free; NTRIPThe standard way RTK corrections are sent over the internet. Think of it as internet radio for correction data.Full definition 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.Full definition every 30 s
Not published by the operator: free trial, discounts / exemptions, what's included.
Coverage
- Where it works
- State-run network for Michigan.
- Stations
- Not published; the public SourcetableThe list of every mount point a caster offers. Your app shows it when you connect without picking one.Full definition listed 6 mountpoints on Oct 17, 2026 (network products plus any single-station streams)
- Needs cell signal?
- Yes: NTRIP needs internet at the RoverThe receiver that moves around the job, like a survey pole or a drone. It uses the base's corrections to find its exact spot.Full definition (cell data or a phone hotspot). General rule, not an operator statement.
Not published by the operator: official coverage map.
Connection settings
NTRIP caster
Confirmed live: a public sourcetable request to 148.149.0.87:10000 answered on Oct 17, 2026 with 6 mountpoints.
- Correction formats
- RTCMThe common format RTK corrections are written in, so different brands can understand each other.Full definition 2.3, RTCM 3.1, RTCM 3.2 MSMMultiple Signal Messages. A newer kind of RTCM 3 message that carries all satellite systems and signals.Full definition
- Satellites (ConstellationOne family of navigation satellites, like GPS, GLONASS, Galileo or BeiDou. More constellations means more satellites to use.Full definition)
- GPSThe US satellite navigation system. People often use "GPS" to mean all satellite positioning.Full definition, GLONASS, Galileo, BeiDou (RTCM 3.2 MSM)
- Must send GGA position?
- Yes; send GGA at least every 30 seconds
Not published by the operator: mount types, DatumThe starting point and ruler that coordinates are measured from. The same spot has different numbers in different datums.Full definition / EpochOne moment of GPS measurement. A receiver logging at 1 Hz records one epoch every second.Full definition / GeoidA lumpy, imaginary "sea level" surface around the whole Earth. Elevations are measured from it.Full definition, accuracy, receivers that work.
Sign-up steps
No step-by-step guide is published. Start at the sign-up page.
- Sign-up page
- Go to sign-up →
Not published by the operator: how long approval takes, who can sign up.
Fine print
- Last checked
- Oct 17, 2026
Not published by the operator: terms / user agreement, system status page, support.
Reliability reports
No user reports yet for MDOT CORSContinuously Operating Reference Station. A permanent GPS receiver that records satellite data all day, every day.Full definition. We only publish reports from real users. Used it in the field? Tell us how it went.
Get a quote
Dealer quotes for MDOT CORS (Michigan) aren't open yet. For now, use the operator's sign-up or contact link on each listing. Get the monthly email to hear when quotes open.