Inside the Northing receiver: what the hardware actually does

Spec sheets in this market are written to impress other spec sheets. This is what the hardware actually does and why each piece is there.

Multi-band, multi-constellation tracking

The receiver tracks all four major constellations — GPS, Galileo, BeiDou, and GLONASS — on multiple frequency bands, including the high-accuracy band that most consumer hardware ignores. Multi-band is what makes centimeter work possible at all (it’s how the atmosphere’s error gets measured instead of guessed), and that extra band is what powers Northing Global, the free positioning mode built into every receiver.

Your phone is the display — by design

There’s no screen, no proprietary terminal, no cellular modem to pay for. The receiver speaks Bluetooth to the phone already in your pocket: position and status stream out, corrections stream in at ~1 kbps. One device on the roof, zero new subscriptions for connectivity.

An open protocol, not a walled garden

The Bluetooth protocol is published and a free Swift SDK is on the way — any app can read position, fix state, and health data without asking our permission. Tractor GPS is the first app; it won’t be the only one. If you’re a developer, the receiver is a platform, not a peripheral.

Field updates that can’t brick it

Firmware ships over the air, cryptographically signed, with an A/B partition scheme: if an update fails or misbehaves, the receiver rolls back to the previous version by itself instead of dying on a shelf. An interrupted transfer resumes where it left off. And for genuine worst-cases there’s a browser-based recovery flasher — no special cables, no dealer visit, no return shipping.

Status you can trust

Precision you can’t verify is decoration. The receiver continuously reports fix type, satellite counts, correction age, and signal health to any connected app — and runs an independent watchdog that flags “Stale Corrections” within 30 seconds of a correction stream silently dying, a failure mode where GNSS engines otherwise keep claiming centimeter confidence. (How that works.)

Works on day one, works after you cancel

With the included RTK subscription: ±2.5 cm, fixed in seconds. Without any subscription, ever: standalone GNSS plus Northing Global — reduced, convergence-based accuracy explained honestly in RTK vs PPP. The hardware never bricks and never holds your fields hostage.