Start here: the beginner path to your first RTK fix

New to RTK? Read these in order. Each step takes about 5 to 10 minutes, and each one links to the next.

1. Step 1. What is RTK? Learn what RTK does and whether your job needs it. What is RTK and do I need it? Then RTK vs PPK.
2. Step 2. Pick a service. Check if your state has a free network, then compare paid ones. Free state network vs paid service, the state map, and the which service fits me picker. Know your distance to a station: baseline length and accuracy.
3. Step 3. Set it up. Learn the five boxes every app asks for: NTRIP explained. Then follow the guide for your gear: DJI controller or the setup guides. Pick your datumDatumThe starting point and ruler that coordinates are measured from. The same spot has different numbers in different datums.Full definition before you start: datums and geoid basics.
4. Step 4. Get your first fix. Know what FIXFixThe best RTK status. The receiver has finished its math and your position is good to a couple of centimeters.Full definition and FLOATFloatA middle RTK status. Corrections are coming in but the math isn't finished, so you're only good to about a foot.Full definition mean: fix vs float. If it won't fix, use the fixes below.
5. Step 5. Keep a backup. If the live link drops, you can still fix your data later with free NOAANOAANational Oceanic and Atmospheric Administration. The US agency that includes NGS and runs the CORS network.Full definition files: PPK with NOAA CORS. If you run your own base, set its position with OPUS.

When something goes wrong

• Stuck in FLOAT
• No NTRIP connection or 401 Unauthorized
• Wrong mount point (you get a list instead of corrections)
• VRS sends nothing: GGA not turned on
• FIX, but in the wrong place: datum or geoid mismatch
• Age of corrections keeps climbing
• The full no-fix checklist