RTK corrections across the United States
RTK Premium delivers network RTK corrections across the United States in NAD83(2011), epoch 2010.0, over standard NTRIP. In a fixed solution it reaches 1 to 2 cm horizontally and under 3 cm vertically. In the US it costs $900 per device per year, or $690 for RTK Core on a single network, and a 14-day free trial comes first. Choose your state below, or check a single site on the coverage map.
RTK Premium in the United States
| Coverage | The coverage map shows each state RTK Premium serves and where 2+ networks overlap |
|---|---|
| Frame | NAD83(2011), epoch 2010.0; NAD83(PA11) in Hawaii; ITRF on request |
| Accuracy | 1 to 2 cm horizontal, under 3 cm vertical, in a fixed solution |
| Service level | 99.9% monthly availability for RTK Premium in Eligible Areas; the coverage map shows them |
| Trial | 14 days on your own receiver; your account arrives by email within two working hours |
| Price | In the US, RTK Premium costs $900 per device per year, RTK Core $690 and RTK Access $350, excluding sales tax. Monthly plans run from $39 to $100. |
| Support | Business days, 03:00 to 17:00 Eastern Time (09:00 CET to 17:00 ET) |
| Stream | RTCM 3.x over NTRIP; caster rtkpremium.xyz, port 2101, mountpoint COMMON |
Check it before you commit
Setup guides
More than 100 step-by-step guides cover receivers, controllers, drones and machine control.
Test it yourself
RTKTEST.com compares up to three correction services against a surveyed point in one 15-minute session, and the 14-day trial runs on your own receiver at your own sites.
RTK corrections by state
Choose your state for its coverage, State Plane zones, setup and price.
Correction services in the United States
US crews choose between free state networks, commercial network RTK, crowd-sourced base stations, satellite-delivered corrections and their own base. All of them can reach centimeter accuracy on a good day. They differ in coverage, in the frame they deliver, and in what happens when the stream stops.
| Type | Typical operator | What to check |
|---|---|---|
| State network | A state DOT, a university or a state geodetic office. Many are free to registered users. | Coverage near your sites, whether an availability commitment is published, support hours, and the frame and epoch delivered. |
| Commercial network RTK | A private provider with stations across several states. | How many correction sources serve your area, the published service level and its remedy, and whether one account works in every state you cover. |
| Crowd-sourced network | Independent owners hosting single base stations. | Distance to the nearest base, station uptime, and the coordinates and frame each base is surveyed in. |
| Satellite or state-space (PPP-RTK, SSR) | A provider broadcasting an error model without a local base. | Convergence time, accuracy and vertical performance. |
| Your own base | Your crew, on a surveyed point. | The survey of the base point, range, and the time spent setting it up and guarding it. |
Coordinates and heights
Most US survey and GIS work runs in NAD83(2011). RTK Premium delivers NAD83(2011), epoch 2010.0, on every US connection, and NAD83(PA11), epoch 2010.0, in Hawaii. ITRF is available on request. NAD83 and ITRF or WGS 84 differ by about 1 to 2 m horizontally in North America, so set the project, the controller and the correction service to the same frame. Each state's page lists its State Plane zones.
Setup
- Start the 14-day free trial on this site, or order a subscription. Your account arrives by email within two working hours.
- Enter the caster rtkpremium.xyz, port 2101 and mountpoint COMMON in your controller or receiver, with the username and password from your account.
- Measure a control point you trust before the job starts, and compare the result with its published coordinates in your project's frame.
Industries using precise positioning or RTK corrections in the United States
Farmland: The US had an estimated 1,865,000 farms on 873,950,000 acres of land in farms in 2025. Auto-steer and guidance across that land need corrections that hold pass after pass. (USDA NASS, 2025)
Roads: Public roads in the 50 states and DC totaled 4,197,446 miles in 2022. Stakeout, grade checks and as-built surveys on road work run to centimeters. (FHWA, Highway Statistics, Table HM-10, 2022)
Surveying: Surveyors held about 52,000 US jobs in 2025, and employment is projected to grow 6 percent from 2025 to 2035. (Bureau of Labor Statistics, 2025)
Wind energy: Wind supplied about 10% of US utility-scale electricity generation in 2025, from projects in 43 states. Turbine pads, access roads and cable routes are staked and checked before and during construction. (U.S. Energy Information Administration, 2025)
Questions about RTK in the United States
Which RTK correction service works across the United States?
RTK Premium delivers network RTK in NAD83(2011), epoch 2010.0, in the states the coverage map shows, over standard NTRIP. The map also shows where 2+ networks overlap.
How much does an RTK correction subscription cost in the US?
RTK Premium costs $900 per device per year, RTK Core $690 and RTK Access $350, with monthly plans from $39 to $100, excluding sales tax.
Are there free RTK networks in the US?
Many states run a network through the DOT, a university or a geodetic office, often free to registered users. Coverage, frame and support differ from state to state, so check each one against your sites.
Which reference frame do US RTK corrections use?
Most deliver NAD83(2011), and some deliver ITRF or a local realization. RTK Premium delivers NAD83(2011), epoch 2010.0, with ITRF on request.
Do I need my own base station?
No. Network RTK builds the correction for your position from the surrounding stations, so there is no base to set up, survey or guard.
How accurate is network RTK in the US?
In a fixed solution under good conditions, RTK Premium reaches 1 to 2 cm horizontally and under 3 cm vertically. Obstructions, the data link and the ionosphere affect how fast the fix arrives and how well it holds.
Can I try RTK Premium before I buy?
Yes. The 14-day free trial runs on your own receiver and needs no payment.
Last updated: 7 November 2026
Try RTK Premium on your own receiver
Run the 14-day trial at your own sites, in your own frame, before you commit to a plan.
