DATA CHECKED OCT 2026
All states / Indiana

RTK corrections in Indiana

Free  17 options · InCORS · Indiana DOTDepartment of Transportation. The state agency that runs many of the free state RTK networks.More · 3 regional/private network(s)

All 17 RTK options in Indiana

Every way to get RTKReal-time kinematic. A way to make GPS accurate to about an inch by getting live corrections from a nearby base station.More CorrectionsLive info from a base station about how far off the satellite signals are, so your rover can cancel out the error.More here, free and paid, side by side: the state network, regional or private networks, and nationwide services.

OptionTypePriceNotes
InCORS
State-run
FreeNo charge (user agreement required)Indiana DOT
Trimble VRS Now (documented regions)
Regional / private
PaidNot published (buy through Trimble dealers or the Trimble store)Trimble. Trimble-owned VRSVirtual reference station. The network blends nearby stations to create a pretend base right next to you, which keeps the baseline short.More networks; ND and SD came from the 2020 MidStates VRS acquisition
MyWay RTK
Regional / private
PaidStation owners pay $1,500/yr per station; 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.More pricing through local partnerMyWay RTK (Effingham IL) and partner base owners. Ag-focused, brand-agnostic network built from partner-owned bases; coverage is local to each partner
GreenMark Equipment RTK Network
Regional / private
Paid$1,250/yr first unit, $1,100 second, $900 each additional; 20% off with 3+ subscriptionsGreenMark Equipment (John Deere dealer). 40+ John Deere Base stationA GNSS receiver sitting still on a known spot. It figures out how wrong the satellite signals are right now and shares that as corrections.More, 10M+ acres around GreenMark's southwest Michigan and northern Indiana stores; 450 MHz radio RTK
Point One Navigation Polaris
Nationwide
PaidVirtual RTK $42/mo per license (~10 cm); True RTK $125/mo per license (1-3 cm); annual discountsUS nationwide. Check the provider's coverage map for your area.
GEODNET RTK
Nationwide
Paid$40/mo or $400/yr per deviceGlobal community-built network. Check the provider's coverage map for your area.
RTKdata
Nationwide
Paid$40/mo, $400/yr, or $1,920 for 5 yrs per deviceGlobal. Check the provider's coverage map for your area.
E38 RTK Premium
Nationwide
PaidFrom $100 (shortest term; see page for durations)Reseller; coverage varies by state. Check the provider's coverage map for your area.
Emlid Corrections
Nationwide
Paid1 yr included with eligible Reach receivers; top-up $699/1 yr or $1,199/3 yr per device (via E38)Emlid receivers only. Check the provider's coverage map for your area.
u-blox PointPerfect Flex
Nationwide
PaidFrom $5.90/mo (up to 100 hrs); 30-day free trialRTK-SSR, global. Check the provider's coverage map for your area.
Swift Navigation Skylark
Nationwide
PaidFrom $69/mo (1 cm RTK) or $29/mo (sub-decimeter RTK-SSR) per ArduSimpleCheck the provider's coverage map for your area.
Leica (HxGN) SmartNet
Nationwide
PaidNot publishedPrice not published. Check the provider's coverage map for your area.
Trimble VRS Now
Nationwide
PaidNot publishedPrice not published. Check the provider's coverage map for your area.
Topcon Topnet Live
Nationwide
Paid$1,800 new US subscription (Topcon store); monthly/project terms via dealersUS network, 200 stations added Jan 2025; works with any network rover. Check the provider's coverage map for your area.
Carlson SkyNet RTN
Nationwide
Paid$1,500/yr; 14-day free trialUS nationwide, single NTRIPThe standard way RTK corrections are sent over the internet. Think of it as internet radio for correction data.More Mount pointOne specific correction stream on a caster, like one channel on a radio. Each one comes from a certain station or network setup.More, 1,700+ bases. Check the provider's coverage map for your area.
RTK2GO
Nationwide
FreeFree community CasterThe internet server that hands out correction streams. Your rover logs in to it, like tuning into a radio station.More; no quality guaranteesCoverage depends on volunteer bases. Check the provider's coverage map for your area.
NOAA NGS CORS
Nationwide
FreeFree post-processing data (RINEXA standard file format for raw GPS data. Any brand of receiver or software can read it.More); not a real-time RTK serviceUse for PPKPost-processed kinematic. Like RTK, but the corrections are applied after the job using recorded data, so no live link is needed.More, not live RTK. Check the provider's coverage map for your area.
NOAA CORS (NCN)Free Post-processing onlyFree38 station(s) in state. RINEX for PPK and OPUSOnline Positioning User Service. A free NOAA website: upload a GPS file and it emails back the precise position of that spot.More, not live RTK. Stations ↓

InCORS

Free
Operator
Indiana DOT
Access
Free
Price
No charge (user agreement required)
Coverage
Indiana

NTRIP caster

casterProvided by the operator after registration
Operator says 'at no charge'.
Sign up / request access →Network info & station mapFull network details →
✓ VerifiedChecked 2026-10-16 · operator source · Sources: [1] [2]

PPK with NOAA CORS in Indiana

NOAANational Oceanic and Atmospheric Administration. The US agency that includes NGS and runs the CORS network.More's permanent base stations record satellite data all day and post it free. You can download those files and use them after a job to correct your drone or rover data (PPK), or to pin down your own base with OPUS. This is not live RTK. This state has 38 working station(s). Each NGSNational Geodetic Survey. The part of NOAA that runs the official US coordinate system, CORS and OPUS.More site log has the station's name and details.

ANDSINABINASINAXINBDINBRINCLINCRINDAINFCINFRINFWINGGINGYINLNINLPINLWINMDINMOINMTINNCINPAINPDINPLINRNINSBINSGINSYINTCINTPINVIINWBINWLINWNINWRIUCOP775PRDU
Relative station positions (plotted from lat/lon, no basemap).
Station IDLat, LonNGS links
ANDS41.5962, -87.1317Coordinates · Site log
INAB40.2983, -85.2114Coordinates · Site log
INAS39.3895, -87.1110Coordinates · Site log
INAX40.2783, -85.6696Coordinates · Site log
INBD38.8631, -86.5223Coordinates · Site log
INBR41.4580, -86.1926Coordinates · Site log
INCL39.5364, -86.8016Coordinates · Site log
INCR40.0822, -86.9049Coordinates · Site log
INDA38.1951, -86.9739Coordinates · Site log
INFC38.3468, -85.7497Coordinates · Site log
INFR40.2784, -86.5327Coordinates · Site log
INFW41.1280, -85.1775Coordinates · Site log
INGG39.3599, -85.5149Coordinates · Site log
INGY41.5952, -87.2466Coordinates · Site log
INLN39.0297, -87.1534Coordinates · Site log
INLP41.5852, -86.6925Coordinates · Site log
INLW41.2901, -87.3160Coordinates · Site log
INMD38.8342, -85.4212Coordinates · Site log
INMO40.7259, -86.7528Coordinates · Site log
INMT39.7712, -86.0430Coordinates · Site log
INNC41.3832, -85.4231Coordinates · Site log
INPA38.5660, -86.4918Coordinates · Site log
INPD39.9732, -85.7697Coordinates · Site log
INPL39.6919, -86.3944Coordinates · Site log
INRN40.9464, -87.1396Coordinates · Site log
INSB39.8672, -84.9409Coordinates · Site log
INSG38.6842, -85.7954Coordinates · Site log
INSY38.9601, -85.8618Coordinates · Site log
INTC38.0600, -86.6258Coordinates · Site log
INTP40.2804, -86.0555Coordinates · Site log
INVI38.6274, -87.5306Coordinates · Site log
INWB40.8247, -85.8032Coordinates · Site log
INWL40.4579, -86.9262Coordinates · Site log
INWN41.0794, -86.6043Coordinates · Site log
INWR41.2703, -85.8946Coordinates · Site log
IUCO39.1741, -86.5065Coordinates · Site log
P77540.4754, -86.9921Coordinates · Site log
PRDU40.4277, -86.9111Coordinates · Site log
  • Download: daily RINEX files (a standard GPSThe US satellite navigation system. People often use "GPS" to mean all satellite positioning.More file type) at geodesy.noaa.gov/corsdata/rinex/YYYY/DDD/ssss/ or the AWS mirror. Custom time spans are available from UFCORS.
  • How often it records: after 30 days, NGS thins daily files to one reading every 30 seconds. Full-rate data is available from NOAA NCEI CLASS.
  • Set your own base: OPUS. See our OPUS how-to.
PPK how-to →OPUS how-to
Source: NGS CORS data access · station list from NGS ITRFInternational Terrestrial Reference Frame. A worldwide datum. In the US it's about a meter different from NAD 83.More coordinate file (Oct 14, 2026).

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