ACORN (Alaska CORS Network)
Free Alaska DOTDepartment of Transportation. The state agency that runs many of the free state RTK networks.Full definition&PF
Coverage
1 stateState-run network for Alaska.
Everything you need to know
FreeType: State-run network
Price and plans
| Plan | Price | Term |
|---|---|---|
| Access | Free (registration required) |
Not published by the operator: free trial, discounts / exemptions, what's included.
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.
Not published by the operator: official coverage map.
Connection settings
NTRIP caster
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.
Not published by the operator: satellites (ConstellationOne family of navigation satellites, like GPS, GLONASS, Galileo or BeiDou. More constellations means more satellites to use.Full definition), DatumThe starting point and ruler that coordinates are measured from. The same spot has different numbers in different datums.Full definition / 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, accuracy, receivers that work.
Sign-up steps
No step-by-step guide is published. Start at the sign-up page.
- Sign-up page
- Go to sign-up →
Not published by the operator: how long approval takes, who can sign up.
Fine print
- Last checked
- Oct 17, 2026
Not published by the operator: terms / user agreement, system status page, support.
Reliability reports
No user reports yet for ACORN (Alaska CORSContinuously Operating Reference Station. A permanent GPS receiver that records satellite data all day, every day.Full definition Network). We only publish reports from real users. Used it in the field? Tell us how it went.
Get a quote
Dealer quotes for ACORN (Alaska CORS Network) (Alaska) aren't open yet. For now, use the operator's sign-up or contact link on each listing. Get the monthly email to hear when quotes open.