Coverage
1 stateState-run network for Missouri.
Plans & pricing
FreeFree
- Constellations
- GPSThe US satellite navigation system. People often use "GPS" to mean all satellite positioning.More, GLONASS; Galileo being added
- Correction formats
- RTCMThe common format RTK corrections are written in, so different brands can understand each other.More 2.1, 2.3, 3.1, CMRxTrimble's own compact correction format. Some networks offer it for Trimble gear and machine control.More, CMRx, RTCM3Net_Autocell
- Datum / Reference frameA precise version of a datum, defined by real stations on the ground. ITRF2020 and NAD 83(2011) are examples.More
- NAD 83(2011)The official US datum for horizontal position right now. Most state networks give coordinates in it.More EpochOne moment of GPS measurement. A receiver logging at 1 Hz records one epoch every second.More 2010.00
- Receivers / drones
- Many receiver brands
- Stations
- 80+ GNSSGlobal Navigation Satellite System. The general name for GPS (USA) and the other satellite systems like GLONASS, Galileo and BeiDou.More stations
NTRIP caster
hostrtk3.modot.mo.gov (per Seiler table)
PortA number that tells your device which "door" on the caster server to use. For NTRIP it's often 2101.More2101
mountsCMRX
Operator FAQ: 'No, it is a free network.'
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 MoDOT CORSContinuously Operating Reference Station. A permanent GPS receiver that records satellite data all day, every day.More RTNReal-time network. A group of base stations spread across an area that work together to send RTK corrections.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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