Why your picture breaks up in heavy rain, and what actually helps
4 min read · Updated 31 July 2026
A brief loss of picture during very heavy rain is normal and affects every DTH provider — satellite signals in the Ku band are absorbed by water in the air. It is not a fault and no installation eliminates it entirely. What a good installation does is widen the margin, so you only lose signal in the heaviest downpours rather than in ordinary rain.
Why it happens
DTH television reaches you on a high-frequency signal from a satellite roughly 36,000 km away. Water droplets absorb and scatter energy at that frequency, so a heavy cloudburst between the dish and the satellite weakens what arrives.
This is called rain fade. It is a property of the physics, not of your equipment, and it is why an outage often clears the moment the heaviest band of rain passes.
When it is not just the weather
Rain fade should be brief and confined to intense rain. Treat these as signs of a real fault:
- 1The picture drops in light rain, or on humid but dry days.
- 2It has become noticeably worse than it was a year ago.
- 3It does not return within a few minutes of the rain easing.
- 4Some channels fail while others hold — often a sign of marginal alignment.
What genuinely helps
Precise alignment. A dish aimed slightly off still works in clear weather but has little margin left for rain. Re-aligning with a signal meter is the single most effective fix.
Sound connections. Water creeping into the LNB connector or a cracked cable sheath corrodes the contact and costs signal permanently. Both are cheap to replace.
A clear view. A tree that has grown, or new construction, can clip the signal path. This is often what changed when reception degrades over a year.
A larger dish. In areas of very heavy monsoon rain, a bigger dish collects more signal and widens the margin. Worth discussing if outages are frequent.
What does not help
Covering the dish with plastic or cloth. It does not keep the signal dry and can hold water against the LNB, which makes things worse.
Wiping the dish during rain. A wet dish surface is not the problem; the rain between you and the satellite is.
Changing provider. Every Ku-band DTH service in India is affected the same way.
Questions people ask
How long should a rain outage last?
Usually a few minutes, tracking the heaviest part of the storm. If you routinely lose the picture for half an hour or more in ordinary rain, alignment or connections are worth checking.
Will a bigger dish fix it completely?
It reduces how often it happens but cannot eliminate it. A larger dish collects more signal, so it takes heavier rain to drop below the threshold — helpful in high-rainfall areas, unnecessary for most homes.
Does this affect Binge+ streaming too?
No. Streaming apps come over your broadband, not the dish, so they keep working when live channels drop. That is one practical advantage of Binge+ during monsoon.