What does a ground station actually do?

Three things at once. It relays traffic between the satellite path and the terrestrial network behind it; it carries the control channel the space segment needs; and it is the point where the link is observed, which is why state, capacity and uptime reporting is specified into the build rather than added afterwards.

Does Xalant own the station, or does a partner operate it?

Not settled, and it would be easy to imply an answer here that does not exist. Both models are ordinary in this industry — an operator places its own equipment on a hosted pad, or a site owner builds and runs the station itself — and which one applies to a given Xalant site depends on an agreement that has not been made.

What decides where a station can go?

Sky view first — elevation mask, horizon obstructions, rain-fade exposure. Then the unglamorous half that actually decides it: land title, a route a crane can reach, a fibre path that exists, and a power source that is not a utility queue.

What licence is needed?

In the United States, an FCC Part 25 earth-station licence, plus the frequency coordination that goes with it. Xalant works the steps with the site owner and says which step a project is on, rather than quoting a duration nobody controls.

When will there be real measurements?

After testing and calibration on a built station. Antenna pointing, gain and pattern checks and an end-to-end soak are the first point at which any figure on this sub-site stops being a design intent — and when those numbers exist they replace the model, with the date they were taken.

Communications · Ground segment

Ground segment

Ground stations

A ground station is the point where a satellite path becomes a terrestrial one. This page is the engineering: what one does, how Xalant plans to build one, and what each step actually involves.

Design intent · no station built yetSiting · power · licence · calibration

Xalant designs, sites, powers and licenses ground equipment. The constellation overhead belongs to a satellite operator.

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Communications · Function

What a ground station does.

Data relay

It moves traffic between the satellite path and the terrestrial network behind it, in both directions, and it is the only place those two meet.

Command and control

It carries the control channel the space segment needs, which is why the antennas, the timing and the power all have their own redundancy.

Network management

It is where the link is observed: state, capacity, uptime. On a Xalant pad that reporting is specified into the build rather than added afterwards.

Communications · Deployment

Deployment

How Xalant plans to deploy one.

Four steps, in order. Each is a step Xalant controls, which is why none of them carries a duration.

Site selection

Sky view first: elevation mask, horizon obstructions and rain-fade exposure. Then the boring part that decides everything — land title, access for a crane, and a fibre route that exists.

Power and hard-line fibre

The pad is designed to draw from the site’s own generation rather than from a utility queue, with battery ride-through on the pad. Fibre is hard-line into the edge centre, with a second route where the ground allows one.

Earth-station licensing

The FCC Part 25 earth-station licence and the spectrum coordination beside it. Xalant works the steps with the site owner and reports which step a project is on.

Testing and calibration

Antenna pointing, gain and pattern checks, and an end-to-end soak before anything is handed over. The measurements that come out of this step are the first real numbers a site will ever have.

No duration is attached to any of these steps. The first three depend on a regulator, a landowner and a utility corridor, and the fourth produces the first measurements this sub-site will ever have — none of which is a figure Xalant can publish before it exists.

Communications · Specification

The design basis.

Ground station — design basis
Specification	Design	Basis
Siting constraint	Elevation mask, horizon obstruction and rain-fade exposure, surveyed	Design basis. Measured per site; no default sky view is assumed.
Land and access	Title, crane access and a fibre route that already exists	Design basis — the half of siting that actually decides feasibility.
Power source	On-site generation, with battery ride-through at the station	Design basis. The station is designed not to sit in a utility queue.
Backhaul	Hard-line fibre, with a second route where the ground allows one	Design basis. Diversity is site-dependent and is never assumed.
Licence class	FCC Part 25 earth station, plus frequency coordination	The regulator’s classification. Xalant holds no licence today.
Commissioning	Antenna pointing, gain and pattern checks, end-to-end soak	Design basis. This step is where measured figures first exist.
Observability	Link state, capacity and uptime reported per gateway	Written into the build spec rather than added after handover.
Ownership model	Not settled — hosted equipment and owned station are both ordinary	Open question. Depends on an agreement that has not been made.

Capacity, latency and licensing durations live in the stats registry and publish only with a named source and an as-of date.

Communications · Questions

Questions about ground stations

What does a ground station actually do?: Three things at once. It relays traffic between the satellite path and the terrestrial network behind it; it carries the control channel the space segment needs; and it is the point where the link is observed, which is why state, capacity and uptime reporting is specified into the build rather than added afterwards.
Does Xalant own the station, or does a partner operate it?: Not settled, and it would be easy to imply an answer here that does not exist. Both models are ordinary in this industry — an operator places its own equipment on a hosted pad, or a site owner builds and runs the station itself — and which one applies to a given Xalant site depends on an agreement that has not been made.
What decides where a station can go?: Sky view first — elevation mask, horizon obstructions, rain-fade exposure. Then the unglamorous half that actually decides it: land title, a route a crane can reach, a fibre path that exists, and a power source that is not a utility queue.
What licence is needed?: In the United States, an FCC Part 25 earth-station licence, plus the frequency coordination that goes with it. Xalant works the steps with the site owner and says which step a project is on, rather than quoting a duration nobody controls.
When will there be real measurements?: After testing and calibration on a built station. Antenna pointing, gain and pattern checks and an end-to-end soak are the first point at which any figure on this sub-site stops being a design intent — and when those numbers exist they replace the model, with the date they were taken.

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Bring gateway-class capacity to a place fibre has not reached — and hand the surplus to the networks already serving it.

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