Find RTK corrections where you work.
RTKReal-time kinematic. A way to make GPS accurate to about an inch by getting live corrections from a nearby base station.Full definition makes GPSThe US satellite navigation system. People often use "GPS" to mean all satellite positioning.Full definition accurate to about an inch. Pick your state to see the free and paid correction services there, with prices and setup details.
Know the exact site? Check an address or ZIP
Free or paid, state by state
23 states have a free network for everyone. Tap a state for its options.
Work in more than one state?
Nationwide services use one login everywhere you have cell signal. Prices are the lowest each operator publishes, per 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.
- Point One Navigation Polaris$42/mo
- GEODNET RTK$40/mo
- RTKdata$40/mo
- E38 RTK PremiumFrom $100
- Emlid Corrections$699/yr
- u-blox PointPerfect FlexFrom $5.90/mo
All 23 nationwide services
- Swift Navigation SkylarkFrom $69/mo
- Leica (HxGN) SmartNetPrice not published
- Trimble VRS NowPrice not published
- Topcon Topnet Live$1,800
- Carlson SkyNet RTN$1,500/yr
- RTK2GOFree
- NOAA NGS CORSFree
- Onocoy$20/30 days
- EarthScope NOTA real-time streamsFree
- Emlid CasterFree
- Trimble CenterPoint RTX$1,150/yr
- Trimble Catalyst$455/mo
- NovAtel TerraStarPrice not published
- John Deere RTK$1,250
- Case IH AFS RTK+$838.10/yr
- New Holland PLM RTK+Price not published
- IGS real-time streams (IGS-IP / BKG)Free
All 50 states
The label shows the best access you can get there: Free means a free network exists.
Who covers which states?
Pick a network to see the states on its published list. Services that don't publish a list are marked, and we don't guess for them.
Regional and private networks19
Networks run by companies or equipment dealers that cover a few states.
KeyNetGPS
Paid$375 per 30-day subscription; yearly from $3,135 (net 30) or $275/mo ($3,300/yr)
States: VA, DC, MD, DE, PA, NJ, NY, CT, RI, MA, VT, NH, ME
View details →AllTerra Central RTKNet
Paid$2,000/yr
States: TX, OK, NM, AZ
View details →TURN GPS (Utah network)
Paid$600/yr per subscription (covers TURN + Nevada GPS)
States: ID, WY, NV
View details →Trimble VRS Now (mapped states)
PaidNot published (buy through Trimble dealers or the Trimble store)
States: AL, CO, FL, GA, IA, IL, IN, KY, MN, MS, ND, NE, NM, OR, SD
View details →Seiler Nebraska Trimble Network
PaidNot published (fee based; contact Seiler)
States: NE
View details →REIL-Net RTK Network
FreeSingle base free; network corrections fee based
States: IL
View details →Frontier VRS
PaidNot published
States: AK
View details →Rural Tower Network
PaidNot published
States: ND, SD, MN
View details →iNET Reference Station Network
PaidNot published (yearly, monthly and short-term plans; site licenses for multiple machines)
States: AL, MS, TN, GA, SC
View details →MyWay RTK
PaidStation owners pay $1,500/yr per station; rover pricing through local partner
States: IN, OH, NY, MI, ID, WI, IL, NE, KS, OR, ND, IA
View details →GreenMark Equipment RTK Network
Paid$1,250/yr first unit, $1,100 second, $900 each additional; 20% off with 3+ subscriptions
States: MI, IN
View details →Keating Tractor RTK Network
Paid$3,000 startup network fee + $300/yr per receiver
States: KS, OK
View details →Trimble VRS Now (Hawaii)
PaidNot published
States: HI
View details →Alpha RTK
Paid$295/mo; $695/6 mo; $995/yr; $1,595/2 yr
States: DE, MD, NJ, PA, DC
View details →AZGPS GNSS Network
Paid$50/day, $300/mo, $2,000/yr; 7-day free trial
States: AZ, CA
View details →GeoShack GeoNet RTK
PaidNot published (call 800-444-5661)
States: TX, LA
View details →Caltrans RTNs (District 6 and others)
RestrictedNot available to the public
States: CA
View details →PennDOT RTN
RestrictedNot available to the public
States: PA
View details →KDOT GNSS Network (Pivot)
RestrictedNot published
States: KS
View details →Nationwide services in detail23
Point One Navigation Polaris
PaidVirtual RTK $42/mo per license (~10 cm); True RTK $125/mo per license (1-3 cm); annual discounts
US nationwide
View details →GEODNET RTK
Paid$40/mo or $400/yr per device
Global community-built network
View details →RTKdata
Paid$40/mo, $400/yr, or $1,920 for 5 yrs per device
Global
View details →E38 RTK Premium
PaidFrom $100 (shortest term; see page for durations)
Reseller; coverage varies by state
View details →Emlid Corrections
Paid1 yr included with eligible Reach receivers; top-up $699/1 yr or $1,199/3 yr per device (via E38)
Emlid receivers only
View details →u-blox PointPerfect Flex
PaidFrom $5.90/mo (up to 100 hrs); 30-day free trial
RTK-SSR, global
View details →Swift Navigation Skylark
PaidFrom $69/mo (1 cm RTK) or $29/mo (sub-decimeter RTK-SSR) per ArduSimple
View details →Leica (HxGN) SmartNet
PaidContact vendor for pricing
Price not published
View details →Trimble VRS Now
PaidContact vendor for pricing
Price not published
View details →Topcon Topnet Live
Paid$1,800 new US subscription (Topcon store); monthly/project terms via dealers
US network, 200 stations added Jan 2025; works with any network rover
View details →Carlson SkyNet RTN
Paid$1,500/yr; 14-day free trial
US nationwide, single NTRIP mount point, 1,700+ bases
View details →RTK2GO
FreeFree community caster; no quality guarantees
Coverage depends on volunteer bases
View details →NOAA NGS CORS
FreeFree post-processing data (RINEX); not a real-time RTK service
Use for PPK, not live RTK
View details →Onocoy
Paid$20 per 30 days + $0.15/hr used
Community-built global network; pay per hour
View details →EarthScope NOTA real-time streams
FreeFree for non-commercial use; commercial license required
Science-grade stations (NOTA); pick a station near you
View details →Emlid Caster
FreeFree (relay for your own base station)
Not a network: sends YOUR base's corrections to your rover over the internet
View details →Trimble CenterPoint RTX
Paid$1,150/yr (US dealer listing)
Satellite PPP; works without cell signal; Trimble receivers
View details →Trimble Catalyst
Paid$455/mo per user (dealer listing)
Subscription GNSS for phones/tablets with the DA2 antenna
View details →NovAtel TerraStar
PaidNot published (dealer quote)
Satellite PPP (also sold as Leica SmartLink and by Ag Leader)
View details →John Deere RTK
PaidNot published (dealer); forum reports ~$1,250-$1,500/machine/yr
Ag: StarFire receivers via Deere dealers
View details →Case IH AFS RTK+
Paid$838.10/yr (dealer listing)
Ag: cellular RTK for Case IH AFS receivers
View details →New Holland PLM RTK+
PaidNot published (dealer subscription)
Ag: cellular RTK to a tractor modem, 1.5 cm
View details →IGS real-time streams (IGS-IP / BKG)
FreeFree (registration required)
Science streams: raw global stations and real-time PPP orbit/clock corrections; not a plug-and-play RTK service
View details →