State-run network
$300/yr
Wisconsin DOTDepartment of Transportation. The state agency that runs many of the free state RTK networks.Full definition
Good to know: $300/yr or $50/mo per user ($150 per extra user after 5; $10,000/yr cap). Free for WI government, higher-ed, federal and tribal users
Where it works
1 stateState-run network for Wisconsin.
All plans
| Plan | Price | Term |
|---|---|---|
| Individual yearly | $300 per user per year | 12 months, not prorated |
| Individual monthly | $50 per user per month | Monthly |
| Organization | $300/user for first 5, then $150/user; max $10,000/yr | Yearly |
- Discounts / exemptions
- Fee rule Trans 58 (in force since Sept 2020) allows $300/yr or $50/mo, with exemptions for government and colleges. But WisDOT's WISCORS page shows no fee or payment step, the FAQ calls the fee 'previously proposed', and Seiler (Apr 2025) lists WISCORS as free. Whether anyone is billed now is unconfirmed: ask WisDOT.
Coverage
- Where it works
- State-run network for Wisconsin.
- 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 9 mountpoints on Oct 17, 2026 (network products plus any single-station streams)
- Needs cell signal?
- Yes: NTRIPThe standard way RTK corrections are sent over the internet. Think of it as internet radio for correction data.Full definition 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.
Connection settings
NTRIP caster
hostwiscors.dot.wi.gov
PortA number that tells your device which "door" on the caster server to use. For NTRIP it's often 2101.Full definition2101
mountsCMRplus, CMRplusGPS, CMRxGNSS, RTCM23, RTCM31, RTCM3Net, SingleBase_CMRplus, SingleBase_RTCM31, RTCM34
Confirmed live: a public sourcetable request to wiscors.dot.wi.gov:2101 answered on Oct 17, 2026 with 9 mountpoints.
- Mount types
- Network and nearest single base (RTCM31 or CMRplusGNSS)
- 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-3 in progress
- Datum / 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
- NAD 83(2011)The official US datum for horizontal position right now. Most state networks give coordinates in it.Full definition epoch 2010.00
- 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 position?
- Yes for single-base: rover NMEAA common text format GPS receivers use to report position and status. GGA is one NMEA message.Full definition position must be within 100 km of a base to log in
Sign-up steps
- Register in the WISCORS web app
- Wait for approval email (about 2 business days) with IP, port and mountpoints
- One unique login per device connected at the same time
- Sign-up page
- Go to sign-up →
- How long approval takes
- Typically within 2 business days
Fine print
- Terms / user agreement
- Read terms →
- Last checked
- Oct 17, 2026
Was listed as free, which was wrong; fees are set by Wis. Admin. Code Trans 58. The operator site has an expired SSL certificate.
States covered1
Not listed by the operator: free trial, what's included, a coverage map, correction formats and a few other details. Ask them before you sign up if these matter to you.
No user reliability reports yet. Used it in the field? Tell us how it went.