Does it need Wi‑Fi? RTK, the Data Center, and the trouble with trees

“Does it need Wi‑Fi?” is really two questions. One is about talking to the robot: the app, the camera, the notifications. The other is about the robot knowing where it is, to the centimeter, on a driveway that’s completely white. The second one matters more, and it’s where most do-it-yourself installs go wrong.

How it knows where it is

By Yarbo’s published specs, positioning is RTK-GPS: ordinary satellite GPS, corrected to centimeter accuracy by a second reference. The correction comes one of two ways:

• The Data Center. A small base station that ships with the snow package. It’s mounted somewhere with a clear view of the sky and talks to the robot by radio, so it works with no internet at all. It also provides a long-range Wi‑Fi link that can cover very large properties.
• NetRTK. Corrections delivered over the internet from a regional network, no base station needed. Yarbo made NetRTK free for the life of the robot as of August 2026.

Layered on top are the cameras, an inertial sensor, and track odometry, fused together so the robot can keep going for a stretch when satellites drop out. The full navigation story is in the knowledge base.

The trouble with trees

RTK needs sky. This is the single most common issue owners describe on Yarbo’s forum: a tree-lined driveway, two houses close together, a garage overhang, and the position signal goes from green to orange. One owner’s memorable phrase was that “the canyon effect is real” — and the canyon can even be the robot’s own snowbanks along a narrow sidewalk by February.

The consequences aren’t subtle. Owners who lost signal mid-pass describe the robot “trailblazing” off the route, which is how shear pins get eaten and lawns get tracked. It’s also why a garage is a bad home for the dock: GPS doesn’t work indoors, so the robot lives outside, all year, like a well-built grill.

This is what a professional install is actually for. At your site assessment we check sky view at several points along the route, not just at the dock. Then we choose Data Center or NetRTK based on what your lot needs, place the antenna high and clear (a roof edge or a pole, never under an eave — Yarbo’s own testers recommend a clear 120-degree view of the sky), and tune the vision fallback on the sections where trees or walls crowd in. Then we run the route in the fall, on dry pavement, and fix anything that wanders before it matters.

A wooded lot in Chester County or Howard County, a Poconos lane, an Evergreen driveway under ponderosas: all workable, all needing more care than an open subdivision in Middletown or Aurora.

Now the other question: talking to it

For the app, notifications, and live camera, the robot needs a data connection. Options, from Yarbo’s specs:

• Your home Wi‑Fi, if it reaches the dock.
• The Data Center’s long-range link, which relays the robot back to your network across a big property.
• An optional 4G plan using the robot’s built-in cellular modem. Clearing works without it, but remote features like the camera away from Wi‑Fi, anti-theft tracking, and remote scheduling depend on it.

On a managed plan we want the robot reachable at 3 a.m., because that’s when monitoring earns its keep. If your Wi‑Fi doesn’t reach the dock, we’ll set up the cellular option rather than hope.

The short version

It needs sky more than it needs Wi‑Fi. Give it both, put the antenna somewhere sensible, test in October, and the “where am I” problem stays solved all winter.