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Satellite internet is a two-way radio connection between equipment at your home and a communications satellite. Your phone or computer sends a request through the home router and satellite terminal; the satellite relays it to a provider gateway on the ground, where the provider connects to the ordinary terrestrial internet. The website’s response follows the reverse route. The satellite carries the radio link, but it does not contain the web itself.
The complete path from a device to a website
The exact network design differs by provider, but this model explains the journey of a normal web request:
- Your device creates traffic. A browser, app, streaming player or game sends data from a phone, computer, television or other device.
- Your local network carries it to the router. Wi-Fi or Ethernet moves the packets to the modem/router supplied or approved for the service.
- The modem and satellite terminal prepare the transmission. They authenticate the connection, package the traffic for the provider’s radio system and send it through the outdoor dish or user terminal.
- The terminal transmits to a satellite. The terminal aims a radio beam at the relevant satellite, either toward a relatively fixed geostationary satellite or toward a moving low-Earth-orbit satellite.
- The satellite relays the signal to the provider’s ground network. A ground station or gateway receives the radio transmission. Provider equipment then routes the request through fiber, data centers and internet exchanges toward the requested website.
- The response returns along the provider’s network and space link. Website data travels back to the gateway, up to a satellite, down to your terminal, through the modem/router and finally over Wi-Fi or Ethernet to your device.
Hughesnet illustrates this with a geostationary service: a request goes from the customer dish to the satellite, then to the Hughes Network Operations Center, which locates the website; the response comes back through the center, satellite, dish and modem. Viasat describes a related arrangement in which fiber feeds a large earth-station antenna, that antenna sends radio traffic to the satellite, and the satellite forwards it to customer equipment. These are useful provider examples, not a universal wiring diagram for every satellite network.
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What the satellite actually does
A satellite is best understood as a relay between radio links. It receives a signal on one frequency or beam and transmits it onward on another link or beam. The provider’s gateways, routing systems and connections to terrestrial networks do the work of finding and delivering internet destinations.
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That is why a satellite can be overhead while a website is hosted thousands of miles away on a terrestrial data center. The satellite contributes the long wireless segment; the rest of the route still depends on ground infrastructure, peering, routing and the destination’s own network.
Equipment installed at your home
Outdoor dish or user terminal
You need equipment designed for your provider’s network. A traditional satellite installation uses a dish reflector and a radio assembly aimed at a particular orbital position. Newer non-geostationary systems use a user terminal that can electronically steer its beam, mechanically adjust its angle or do both as satellites move.
Hughesnet describes a home connection built around a satellite dish and Wi-Fi modem/router, with installation and alignment for the service’s orbital position. A Starlink Kit, by contrast, contains a user terminal, Wi-Fi router, power supply and mount. Those components are service-specific: a dish or router from one network should not be assumed to work on another network.
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The modem handles the provider’s satellite protocol and the handoff between the radio terminal and your local network. A separate or integrated router assigns local addresses, provides Wi-Fi and Ethernet, and applies features such as firewall rules or parental controls. Even when the outdoor terminal is working correctly, weak Wi-Fi inside the home can make the internet appear slow.
Cables, power and mounting hardware
The terminal needs a suitable power supply and a cable run between the outdoor unit and indoor equipment. Cable quality, connector condition, distance and weather sealing can affect the link. A reliable electrical supply matters because the terminal, modem and router must remain powered; a brief outage can interrupt an active session even when the satellite signal is otherwise strong.
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Why a clear view of the sky matters
Radio signals need an appropriate line of sight between the customer terminal and the satellite or satellites it is using. Trees, buildings, roof features and other obstructions can block part of that path. Hughesnet describes an unobstructed view toward its relevant orbital position. Starlink identifies installation environment, terminal angle or field of view, obstructions, weather, cable positioning and power reliability as factors that can affect performance.
“Clear sky” does not mean every service has the same placement rule. A fixed GEO dish generally needs a clear view in one direction, while a LEO terminal may need a wider portion of the sky because satellites pass overhead. Follow the provider’s placement assessment and mounting instructions rather than pointing a generic dish at the sky.
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GEO and LEO: how orbit changes the connection
| Characteristic | Geostationary Earth orbit (GEO) | Low Earth orbit (LEO) |
|---|---|---|
| Position relative to your home | The satellite travels at a rate that matches Earth’s rotation, so it appears to remain over roughly the same point. | The satellite moves across the sky relative to a fixed home. |
| Typical customer pointing | A fixed dish can point toward a stable location in the sky after alignment. | The terminal must maintain links as satellites pass, using steering, tracking or network handoffs. |
| Distance and delay tendency | Much longer space path; Hughesnet gives an approximate altitude of 22,000 miles, while Viasat describes about 22,300 miles for its GEO link. | Shorter space path, so propagation delay can be lower; processing, routing, congestion and the terrestrial route still add delay. |
| Network structure | A service can cover a large area with a small number of satellites and gateways designed for that orbit. | A constellation of many moving satellites is needed to maintain coverage and hand off connections. |
| Availability question | Depends on the satellite’s footprint, gateway capacity, local installation view and service territory. | Depends on constellation coverage, local capacity, terminal visibility and service territory. |
Geostationary satellites
GEO satellites orbit far above the equator. Because their apparent position is stable, a correctly aligned dish can keep pointing in one direction. The trade-off is distance: a request must travel up to the satellite and back down before the provider network can continue the route. Hughesnet characterizes the resulting delay as a fraction of a second in its consumer FAQ; the actual experience varies with the complete route and application.
Low-Earth-orbit constellations
LEO satellites are much closer and move relative to the ground. A network therefore uses many satellites and changes the active connection as spacecraft rise and set. The European Commission’s broadband overview distinguishes GEO from non-geostationary systems and notes that MEO and LEO systems have lower latency. Lower altitude reduces the propagation component, but it does not guarantee fiber-like responsiveness: queues, gateway routing, processing and the destination server remain part of every round trip.
The European Commission recorded more than 6,000 Starlink satellites in LEO in March 2024. That is a historical figure for that date, not a current constellation total.
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Speed, latency and reliability are different
Latency
Latency is the time data takes to travel through the network, commonly discussed as round-trip delay. GEO’s long space leg increases the minimum time before a response can return. LEO can reduce that portion, but the measured result also includes terminal processing, provider routing, congestion and the terrestrial path to the website or game server.
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Latency is especially noticeable when an application waits for a response before continuing: interactive games, remote desktops, voice calls and live video conversations are more sensitive than downloading a file that can be buffered.
Throughput
Speed, usually expressed as megabits per second, measures how much data can move over time. A connection can deliver substantial throughput while still pausing noticeably at the start of each exchange. Conversely, low latency does not guarantee high download capacity.
As one provider-specific reference, Starlink’s cited specification lists typical download speeds of 25–220 Mbps, typical uploads of 5–20 Mbps and land latency of 25–60 ms, with 100-plus milliseconds in certain remote locations. The same specification says those speeds and uninterrupted use are not guaranteed and may be lower during high usage. These figures describe that service at the time of the specification; they are not a benchmark for satellite internet generally.
Reliability and weather
Rain, heavy snow, ice, wind movement, obstructions and power interruptions can reduce or interrupt a link. The effect depends on frequency, antenna design, installation and the provider’s network. A clear installation can still experience congestion when many customers share local capacity, so orbit alone cannot predict reliability.
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- Check service coverage first. Availability and capacity are location-specific. Confirm that the provider accepts your address and identify any local installation restrictions.
- Survey the mounting location. Look for the required sky view, a stable surface, safe access and a route for the cable. Account for seasonal tree growth and nearby structures.
- Use the provider-compatible terminal and accessories. Do not substitute a generic dish, mount, power supply or router unless the provider explicitly supports it.
- Mount and align the outdoor equipment. A GEO installation is aligned toward its assigned orbital position. A LEO terminal is placed and oriented according to its field-of-view or tracking instructions.
- Protect the cable path. Use approved cable length and connectors, weather-seal outdoor joins and avoid sharp bends or locations where the cable can be crushed.
- Power the terminal and modem/router. Allow the equipment to complete its startup and registration process before judging performance.
- Test both the satellite link and the home network. Test near the router over Ethernet when possible, then test Wi-Fi in the rooms where you use it. This separates a satellite issue from an indoor coverage issue.
Troubleshooting common problems
No connection after installation
- Confirm that the terminal, modem/router and power supply are receiving power.
- Check every cable and connector, including the indoor-to-outdoor run.
- Verify that the terminal completed registration and that the account is activated.
- Recheck alignment or field of view; a new obstruction or incorrect mount can prevent acquisition.
Frequent dropouts
- Look for intermittent power, loose connectors or water ingress.
- Inspect the sky view for branches, roof edges or temporary equipment blocking the path.
- Check whether weather coincides with the interruptions.
- For a moving-satellite system, review the terminal’s obstruction or visibility report and follow its placement guidance.
Good signal but slow browsing
- Run a test over Ethernet or close to the Wi-Fi router to rule out local wireless interference.
- Compare performance at different times; high-usage periods can reduce available capacity.
- Check whether a single website or service is slow before blaming the satellite link.
- Remember that a high-throughput plan can still feel delayed on latency-sensitive applications.
What to verify before choosing a service
- Coverage at your exact address: orbital coverage does not automatically mean that a provider accepts new customers or has capacity in your area.
- Installation requirements: ask about mounting, field of view, cable limits, power and whether professional installation is required.
- Performance qualifications: distinguish typical ranges from guarantees, and note whether figures apply to a particular location, plan or date.
- Latency needs: decide whether your main activities are downloads and buffered video or interactive gaming, calls and remote work.
- Weather and outage expectations: understand how the provider handles severe weather, gateway interruptions and equipment replacement.
- Home-network design: plan Wi-Fi coverage separately from the outdoor satellite link so an indoor dead zone is not mistaken for a satellite failure.
The practical takeaway
Satellite internet extends the provider’s network over a radio hop through space: device, router, terminal, satellite, gateway and terrestrial internet, then back again. GEO systems offer a stable pointing direction but a longer delay; LEO systems use moving satellites and handoffs to shorten the space path. Your real experience depends on the terminal’s sky view, installation, weather, power, provider capacity, routing and the application you are using—not on orbital altitude alone.
Quick Recap
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