Starlink Obstructions: Fix Dropouts

Obstructions are the single most common reason Starlink users experience repeated short dropouts. Unlike traditional satellite dishes pointed at a fixed spot in the sky, Starlink's dish tracks dozens of low-earth-orbit satellites as they arc across the sky — meaning any tree branch, roofline, chimney, or pole in that path creates a recurring interruption every time a satellite passes behind it. Identifying and eliminating obstructions is almost always the first fix to try before blaming the network itself.

Why Obstructions Hit Harder Than You'd Expect

Starlink satellites orbit at roughly 550 km altitude and move quickly across the sky. The dish constantly hands off connections between satellites to maintain a stable link. When an obstruction sits in the tracking arc, a dropout occurs every time a satellite passes behind that object — which can happen dozens of times per day depending on the satellite's orbital plane. A single branch crossing one corner of the sky view might cause 20 or more 1–3 second dropouts daily, enough to interrupt video calls, break online gaming sessions, and cause buffering on streaming services.

The dish requires a clear view of a wide cone of sky. The minimum clearance zone extends from about 25 degrees above the horizon upward through the zenith. Anything inside that cone that blocks the signal path causes outages proportional to how much sky it covers. A thick tree canopy covering 30 percent of the sky view will create far more outages than a single chimney blocking 2 percent.

Using the Starlink App Obstruction Map

The Starlink app includes an augmented-reality obstruction checker that is the most efficient diagnostic tool available. To use it, stand at the exact location where your dish is mounted — or where you intend to mount it — and open the app. Tap the dish icon on the home screen and select "Check for Obstructions." The app uses your phone's camera and gyroscope to display a live sky overlay that shows which portions of the tracking arc are blocked by nearby objects.

Walk slowly in a circle at the dish location while holding your phone pointed at the sky. The app builds a picture of obstructions as you move. After a minute or two, it reports a result expressed in hours of expected daily downtime. Starlink's own recommendation is zero hours — anything above 0.1 hours per day will likely be noticeable during normal use. The map also highlights the compass direction of your worst obstructions, which tells you whether a tree to the north, a chimney to the south, or a roofline to the east is the culprit.

After your dish has been running for a while, the app's Statistics section shows real-world obstruction data. The "0 hours obstruction" reading in that panel confirms the dish experienced no signal-blocking events in the recent measurement window. If the stat shows anything other than zero, the obstruction map is your first stop.

Mount Options That Eliminate Obstructions

The most effective solution to obstructions is almost always raising the dish higher. Starlink sells and supports several mounting options, and third-party manufacturers offer additional configurations.

Ground and Fence Mounts

Placing the dish on the ground or on a fence post is the easiest installation but almost always produces the worst obstruction score in any property surrounded by trees or near a house. From ground level, the roofline of your own home blocks a significant portion of the required sky arc. These mounts are only appropriate on open, flat land with no nearby structures or trees.

Eave and Fascia Mounts

Mounting the dish to the eave of a roofline raises it above window level but typically leaves the dish looking up past the roofline itself, which blocks a slice of the sky. Eave mounts are a common starter configuration and work adequately on properties with modest tree coverage, but they routinely fail on wooded lots.

Roof Peak Mounts

A peak mount positions the dish at the highest point of the roof, giving it a 360-degree unobstructed view above the roofline. This configuration clears the house structure itself as an obstruction and is an excellent choice for most residential properties. Installation requires securing a mount bracket at the ridge and routing the cable down the slope of the roof and through an exterior wall.

Tall Pole Mounts

When trees surround a property, a pole mount extending 10 to 16 feet above the roofline is the most effective solution. At that height, the dish clears the canopy of most mature trees. Pole mounts require a secure concrete footing or heavy flange mount and proper cable management down the pole length. This is the highest-performing obstruction solution available for wooded residential properties.

Cable Routing When Relocating the Dish

Moving to a better mount often means running a longer cable. Starlink's cable exits the dish and carries both power and data. When routing along an exterior wall, use UV-resistant cable clips every 12–18 inches to keep the cable tidy and protect it from wind stress. Enter the building through a drilled hole fitted with a weatherproof grommet, or use a flat window pass-through cable if drilling is not an option. Avoid bending the cable at angles sharper than a 1-inch radius, and keep it separated from electrical power wiring by at least 6 inches to prevent interference.

After Relocating: Verifying the Fix

Once you have the dish in a new position, run the obstruction check in the app again from the new location before finalizing the mount. After installation, let the dish run for 24 hours and then check the Statistics panel in the app for real-world obstruction hours. A reading of zero confirms the problem is resolved. If dropouts continue, run a speed test to rule out congestion or hardware issues as secondary causes.