State-run network
Free
Alaska DOTDepartment of Transportation. The state agency that runs many of the free state RTK networks.Full definition&PF
Good to know: Free (registration required)
Where it works
1 stateState-run network for Alaska.
All plans
| Plan | Price | Term |
|---|---|---|
| Access | Free (registration required) |
Coverage
- Where it works
- State-run network for Alaska.
- 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 10 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
hostwww.acorn-gnss.net
PortA number that tells your device which "door" on the caster server to use. For NTRIP it's often 2101.Full definition2101
mountsVRS_SouthCentral_RTCM3, VRS_SouthEast_RTCM3, VRS_Interior_RTCM3, MS_RTCM3, VRS_SouthCentral_CMRx, VRS_NorthWest_RTCM3, VRS_SouthEast_CMRx, VRS_NortonSound_RTCM3_EXPERIMENTAL, VRS_Interior_CMRx, MS_CMRx
Confirmed live: a public sourcetable request to www.acorn-gnss.net:2101 answered on Oct 17, 2026 with 10 mountpoints.
- Mount types
- Nearest single base and regional VRSVirtual reference station. The network blends nearby stations to create a pretend base right next to you, which keeps the baseline short.Full definition
- Correction formats
- RTCMThe common format RTK corrections are written in, so different brands can understand each other.Full definition
- 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 VRS / network / nearest-base mountpoints (your rover must send its position as an NMEAA common text format GPS receivers use to report position and status. GGA is one NMEA message.Full definition GGA message). General rule based on the mount types.
Sign-up steps
No step-by-step guide is published. Start at the sign-up page.
- Sign-up page
- Go to sign-up →
Fine print
- Last checked
- Oct 17, 2026
New find. Coverage is regional (Southcentral, Interior, Southeast VRS). Free status and CasterThe internet server that hands out correction streams. Your rover logs in to it, like tuning into a radio station.Full definition come from a state presentation; the operator site loads but we didn't read its terms.
States covered1
Not listed by the operator: free trial, discounts, what's included, a coverage map 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.