Plans & pricing
Price not publishedFree once public
- Constellations
- GPSThe US satellite navigation system. People often use "GPS" to mean all satellite positioning.More, GLONASS, Galileo, BeiDou, QZSS
- Correction formats
- RTCMThe common format RTK corrections are written in, so different brands can understand each other.More.x via NTRIPThe standard way RTK corrections are sent over the internet. Think of it as internet radio for correction data.More
- Datum / Reference frameA precise version of a datum, defined by real stations on the ground. ITRF2020 and NAD 83(2011) are examples.More
- Aligned with ITRFInternational Terrestrial Reference Frame. A worldwide datum. In the US it's about a meter different from NAD 83.More and NGSNational Geodetic Survey. The part of NOAA that runs the official US coordinate system, CORS and OPUS.More standards
- Network
- Station spacing 35-50 km, statewide deployment in progress
NTRIP caster
hostProvided after signup
PortA number that tells your device which "door" on the caster server to use. For NTRIP it's often 2101.More—
In internal testing, with public launch planned for early 2027. Not usable yet.
Checked 2026-10-16 Sources: [1] · Blank fields mean the operator doesn't publish it · Report a change
Reliability reports
Collecting soonNo user reports yet for ICORN (coming 2027). 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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Get a quote
Coming soonSoon you'll be able to ask local dealers for RTK quotes for ICORN (coming 2027) (Illinois), all in one form. This form is not open yet. It's switched off, and nothing you type here is sent or saved. Want to know when it opens? Join the monthly email below.