DVB-T/T2 interference and pixelation: what to do | Sequence of diagnosis
Check whether the problem is weak signal, wrong direction, clipping or installation and repair it in the right order.
DVB-T/T2 interference and pixelation: what to do
Pixelation does not automatically mean that the signal is too weak. In practice, the problem is often wrong direction, reflections, distortion or weak installation elements.
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Which most often causes pixelation
Cause | Typical symptom | What to check first | Meaning |
|---|---|---|---|
Wrong antenna direction | Some MUXs work poorly | Direction and transmitter comparison | Very high |
Poor signal quality | Dropouts in poorer conditions | Antenna position and MUX stability | High |
Overdrive/too much gain | Irregular problems despite apparently strong reception | Amplifier and track configuration | Average |
Cable or connectors | Random quality drops | Condition of cables and connections | High |
The best sequence of actions
First verify the transmitter and antenna direction.
Check the stability of several MUXs in the same setting.
Only then evaluate the cable, connectors and any amplifiers.
Finally, perform a retest after a short adjustment and at a different time of day.
When the amplifier is harmful
When you try to replace the wrong transmitter selection or wrong antenna direction.
When you use it, your reception becomes less predictable, not more stable.
When the problems concern only some MUXs and you have not yet checked the better positioning of the antenna.
Related pages
How to improve the quality of the DVB-T/T2 signal
The best DVB-T/T2 transmitter in United Kingdom
DVB-T/T2 antenna direction for United Kingdom
FAQ
Does pixelation always mean the signal is too weak?
NO. It also often means wrong direction, reflections or problems in the installation itself.
Is it worth buying an amplifier right away?
NO. First, you need to check the transmitter, the direction and the basics of the installation, because the amplifier may perpetuate a bad setup.
How to distinguish a direction problem from a cable problem?
If changing the direction gives a marked improvement in several MUXs, the problem is usually with the alignment, not the cable itself.