IGS real-time streams (IGS-IP / BKG)
Free Science streams: raw global stations and real-time PPP orbit/clock CorrectionsLive info from a base station about how far off the satellite signals are, so your rover can cancel out the error.Full definition; not a plug-and-play RTKReal-time kinematic. A way to make GPS accurate to about an inch by getting live corrections from a nearby base station.Full definition service
Coverage
50 statesSold nationwide. Real RTK coverage depends on station density and cell signal, so check the official map for your site.
Everything you need to know
FreeType: Scientific network
Price and plans
| Plan | Price | Term |
|---|---|---|
| IGS real-time streams (BKG casters) | Free (registration required) |
Not published by the operator: free trial, discounts / exemptions, what's included.
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
- 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 471 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 igs-ip.net:2101, products.igs-ip.net:2101 answered on Oct 17, 2026 with 471 mountpoints.
- Mount types
- Single global stations (raw data) and SSR products for real-time PPP
- Correction formats
- RTCMThe common format RTK corrections are written in, so different brands can understand each other.Full definition.x observations and ephemeris; RTCM-SSR / IGS-SSR orbit and clock corrections
- Receivers that work
- Software clients such as BNC or RTKLIB; most survey rovers can't use SSR directly
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, 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?, accuracy.
Sign-up steps
- Accept the IGS terms of service
- Register at register.rtcm-ntrip.org
- Wait for the login email
- Connect with BNC or RTKLIB
- 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 IGS real-time streams (IGS-IP / BKG). We only publish reports from real users. Used it in the field? Tell us how it went.
Get a quote
Dealer quotes for IGS real-time streams (IGS-IP / BKG) 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.