DATA CHECKED OCT 2026
Nationwide services / Carlson SkyNet RTNReal-time network. A group of base stations spread across an area that work together to send RTK corrections.Full definition

Carlson SkyNet RTN

Paid  US nationwide, single NTRIPThe standard way RTK corrections are sent over the internet. Think of it as internet radio for correction data.Full definition Mount pointOne specific correction stream on a caster, like one channel on a radio. Each one comes from a certain station or network setup.Full definition, 1,700+ bases

Coverage

50 states

Sold nationwide. Real RTKReal-time kinematic. A way to make GPS accurate to about an inch by getting live corrections from a nearby base station.Full definition coverage depends on station density and cell signal, so check the official map for your site.

Tap a network below to light up the states it lists. Yellow = state is on the network's list (coverage inside a state can still be partial).
Regional / private
State-run
Nationwide (dashed = no state list published)

Everything you need to know

from $1,500/yr

Type: Commercial network

Price & plans

PlanPriceTerm
Annual$1,500/yrAnnual
Free trial
14 days
Discounts / exemptions
Not published
What's included
Not published

Coverage

Where it works
Sold nationwide. Real RTK coverage depends on station density and cell signal, so check the official map for your site.
Stations
1,700+ 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.Full definition (operator claim)
Official coverage map
Open map →
Needs cell signal?
Yes: NTRIP 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

hostProvided after signup (not published; access is through SurvPC 7)
PortA number that tells your device which "door" on the caster server to use. For NTRIP it's often 2101.Full definitionProvided after signup
mountsSingle mount point
Mount types
Not published
Correction formats
Not published
Satellites (ConstellationOne family of navigation satellites, like GPS, GLONASS, Galileo or BeiDou. More constellations means more satellites to use.Full definition)
GPSThe US satellite navigation system. People often use "GPS" to mean all satellite positioning.Full definition, GLONASS, Galileo, BeiDou (3-frequency)
Datum / 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
Not published
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?
Not published
Accuracy
'Sub centimeter' claimed by the dealer; single-baseline CorrectionsLive info from a base station about how far off the satellite signals are, so your rover can cancel out the error.Full definition
Receivers that work
Carlson Viking, BRx7 and RTk5 only; SurvPC 7 GPS module required

Sign-up steps

Not published step-by-step. Start at the sign-up link.

Sign-up page
Not published
How long approval takes
Not published
Who can sign up
Not published

Fine print

Terms / user agreement
Annual; does not auto-renew
System status page
Not published
Support
1-888-299-6996, [email protected]
Last checked
2026-10-17
Checked 2026-10-17 Sources: [1] [2] [3] · "Not published" means we couldn't find it on the operator's public pages · Report a change

Reliability reports

Collecting soon

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