Satellite internet used to mean slow, expensive and unusable for anything interactive. The move to low-earth orbit changed the physics rather than the marketing, and understanding the difference explains both what it fixed and what it did not.
Why orbit height decides everything
Traditional satellite internet uses geostationary satellites roughly 36,000 kilometres up. That is far enough for the round trip to add substantial delay no matter how fast the equipment is, because the signal is limited by the speed of light. The result is workable for downloads and painful for video calls and gaming.
Low-earth-orbit constellations fly a few hundred kilometres up. The round trip is far shorter, so latency drops into a range comparable with ordinary fixed broadband. That single change is what made satellite internet usable for interactive applications.
The cost of flying low
- You need many satellites. A low satellite covers a small area and moves quickly, so continuous coverage requires hundreds or thousands rather than a handful.
- Handovers are constant. Your dish is repeatedly switching between satellites passing overhead, which is why brief interruptions occur.
- Satellites have short lives. At low altitude there is still enough atmospheric drag that satellites deorbit within years and must be replaced continuously.
- Ground stations still matter. Traffic usually returns to earth at a gateway, so capacity depends on ground infrastructure as well as satellites.
What affects the speed you actually get
Advertised speeds assume conditions you may not have. The dish needs a genuinely clear view of the sky, and trees or a roofline in the wrong place cause repeated dropouts rather than a steady slower connection. Heavy rain and snow attenuate the signal. Most significantly, capacity is shared: a cell with many subscribers slows at peak times in a way a private fixed line does not.
Where it makes sense
Satellite internet is compelling where the alternative is nothing, poor mobile coverage, or a fixed-line installation costing more than the service. That covers rural properties, boats and vehicles, temporary sites, and disaster or conflict areas where terrestrial infrastructure is damaged or absent.
Where fibre or good cable is available, satellite is generally slower, more weather-dependent and more expensive. It is a solution to an access problem, not an upgrade.
Common questions
Does weather really stop it working? Heavy precipitation degrades the signal and can interrupt it. Light rain usually has little effect.
Can it replace fibre? For most households with fibre available, no. Capacity per cell is finite and shared, which fibre is not in the same way.
Why does it need such a clear view of the sky? Because the satellite being used changes constantly, so the dish needs an unobstructed arc, not one fixed line of sight.
Is latency now as good as cable? Close for most uses. It remains higher than a good fixed line, and competitive gaming is where the gap is still noticeable.
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