Check the dish before you blame the line

Published September 2026

Signal, SNR and BER on the receiver's meter tell you whether the problem is above your head or on the server. Here is how to read them, and the one test that settles it in five minutes.

Before you change anything about your line, spend five minutes with the signal meter. A surprising share of what gets reported as a server problem is a dish problem, and the two look identical from the sofa: the picture stalls, blocks up or refuses to open.

Strength and quality are different numbers

Your receiver shows at least two figures, and people read the wrong one.

Signal strength, often labelled AGC, says the LNB is delivering something down the cable. It can sit near the top of the scale while the dish is a degree off, because a slightly misaimed dish still collects plenty of energy.

Signal quality, shown as SNR, says whether what arrived is usable. This is the number that matters. A strong, low-quality reading is the classic fingerprint of alignment, skew, a failing LNB or weather.

Some images also show a bit error rate. Anything above zero on a clear day is a warning even when the picture currently holds, because the margin is already gone.

The test that settles it

Tune a free-to-air channel on the same transponder as the one that will not open.

Free-to-air needs no decryption at all. No line, no softcam, no server. If it will not play, nothing on the server side is involved and no provider on earth can help you. If it plays cleanly, your dish and tuner are doing their job and you can move on with confidence.

That one step separates the two halves of the system faster than any amount of config editing, and it costs nothing.

What actually goes wrong on the dish side

• Alignment drift. Brackets move. A storm, a ladder against the wall or years of thermal cycling are enough. Symptoms arrive gradually and get blamed on the provider because nothing changed indoors.
• Skew. The rotation of the LNB in its holder. Wrong skew looks like a healthy strength reading with quality that never quite reaches usable.
• A tired LNB. They degrade rather than fail outright, so you lose margin for months before anything breaks.
• Water in a connector. The single most common fault on an installation more than a few years old. Check the F-connector at the LNB first, then the one at the wall.
• Rain fade. Normal to a degree. If a light shower breaks the picture, the setup had no margin in dry weather either.

None of these produce a different result on a different line, which is why they are worth ruling out before you start comparing providers.

The wrong position is not a weak signal

Worth naming separately, because it produces a very convincing false reading. A dish aimed correctly at a position you do not want shows full strength, full quality and a long transponder list containing none of what you are looking for.

That is not a signal problem and not a line problem. It is an orbital position problem, and the fix is a second LNB, a DiSEqC switch or a motorised mount rather than anything you can buy from a provider.

Once the dish is clean

With a solid free-to-air picture on the same transponder, the dish is exonerated and the interesting half starts. Our line tester tells you in seconds whether the server is answering, and the troubleshooting guide walks the rest of the connection path.

If the picture is fine on most channels and only stutters at peak time, that is a different animal again, and the freezing guide covers it.

Then test on your own dish

Once you know the dish is sound, the only honest way to judge a service is on your own receiver, on your own alignment, during an evening you actually care about. A free 3-day trial gives you 72 hours to do exactly that, no card required.