Guides

GNSS corrections, in plain English.

The precision-GPS industry buries simple ideas under acronyms. These guides explain what the technology actually does, where it works, what it costs across the market, and what accuracy really means — claims separated from measured results, with every number carrying the conditions it was measured under.

• Updated 2026-08-09

  How much does RTK actually cost?

  The real price of centimeter GPS across the market — dealer bundles, base-and-rover kits, bare boards, and phone-connected receivers — including the year-two costs nobody quotes.

• Updated 2026-08-09

  How Northing RTK works: centimeter corrections through your phone

  What a correction stream actually does, how it reaches the receiver through your phone at about 1 kbps, and the measured numbers behind 'fixed in seconds'.

• Updated 2026-08-09

  Inside the Northing receiver: what the hardware actually does

  Multi-band, multi-constellation GNSS, Bluetooth to your phone, signed over-the-air updates with rollback, and an open protocol — the capabilities, plainly.

• Updated 2026-08-09

  Northing RTK coverage, plainly stated

  Where the RTK subscription works as of August 2026 — the regions covered, the gaps stated as clearly as the coverage, and what to do if you are outside them.

• Updated 2026-08-09

  RTK vs PPP: instant centimeters vs patient decimeters

  The two ways to get precision GNSS, explained by their trade-offs — convergence time, coverage, cost — and what we measured with each on the same vehicle.

• Updated 2026-08-09

  Tractor guidance accuracy: lightbar, WAAS, and RTK compared

  What each level of guidance accuracy actually costs you in overlap and skip, why pass-to-pass and year-to-year are different numbers, and which jobs need centimeters.

• Updated 2026-08-09

  RTK receiver for iPhone: what actually works over Bluetooth

  How an external RTK receiver connects to an iPhone, the difference between system-wide location and app-level integration, and what to check before you buy.

• Updated 2026-08-09

  What is RTK GPS? Centimeter accuracy, explained

  RTK turns metre-level satellite positioning into centimeter-level positioning by measuring the errors instead of guessing them. What it is, what it needs, and what it will not fix.

• Updated 2026-08-09

  Why is my phone's GPS only accurate to 3–5 metres?

  Phone GPS is limited by its antenna, its single-frequency chip, and the uncorrected atmosphere — not by a setting you can change. What actually improves it, and what does not.