Common Mistakes in Satellite Dish Installation (and How to Avoid Them)

After watching thousands of satellite installs, the same mistakes come up again and again. The good news is that nearly all of them are cheap and easy to avoid if you know to look.

Mistake 1: Confusing Signal Strength with Signal Quality

Strength shows the LNB is picking up something; quality shows it is picking up the right thing, cleanly. A dish pointing between two satellites can show 90% strength and 0% quality. Always peak the quality bar, not the strength bar.

Mistake 2: Under-Sizing the Dish

Buying the smallest dish the shop sells saves €15 now and costs you rainy-day pixelation for the next ten years. Add one size up if you are at the edge of a footprint.

Mistake 3: Bad F-Connectors

Most “LNB failures” are actually bad connectors. If the braid touches the centre pin, you get a short and no signal at all. If the centre pin is too short, you get intermittent lock. Learn to make connectors properly.

Mistake 4: Not Weatherproofing the Outdoor Connector

Water creeps into an un-taped F-connector within months. Wrap every outdoor joint in self-amalgamating tape, stretched as you go — not ordinary electrical tape.

Mistake 5: Tilted Pole on a Motorised Mount

A fixed dish tolerates a slight tilt; a DiSEqC motor does not. If due-south works but east and west satellites do not, your pole is not vertical.

Mistake 6: Forgetting Tree Growth

A clear view in spring can be a blocked one in summer. Allow 2–3 years of growth between the dish and the nearest tree.

Mistake 7: Rushing the Alignment

The dish is aligned when quality peaks, not when you can watch TV. Spend the extra ten minutes nudging it until quality will not go any higher — that margin is your rain insurance.

Mistake 8: Using the Wrong LNB

A wideband LNB for Sky/Freesat will not work with a generic receiver, and vice versa. Match the LNB standard to the receiver.

Mistake 9: Running Cable Near Mains

Coax run parallel to mains picks up hum and interference. Cross power cables at 90 degrees and keep them at least 20 cm apart.

Mistake 10: No Labels

Label both ends of every cable. Next year, when you are on the roof in the rain trying to work out which cable goes to which receiver, you will thank yourself.

None of these mistakes costs money to fix — they all cost time. A careful first install is cheaper than a perfect second one.