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Communications · Coverage checker

Tool

Coverage checker

Enter a pair of coordinates or pick a state. The checker returns the nearest planned gateway market, the distance to it, and what that distance means for the terrestrial hand-off.

SimulatedModelled · not measured

Modelled, not measured. The distance is computed to the centre of the planned market’s state — Xalant publishes no site coordinates.

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

Communications · Checker

Check a site

Decimal degrees, latitude first. No postcode lookup: the ZIP-prefix centroid table this needs is not in the repository yet, and a guessed coordinate is worse than a missing field.

or

Enter a pair of coordinates or pick a state, and this panel returns the nearest planned gateway market and how far away it is. Every answer is modelled from published geometry — there is no site, no gateway and no measurement behind any of it.

Communications · Method

Method

How the number is made.

Nothing here is a black box. The arithmetic is one formula over two files that are already in this repository, and it is written out in full — with worked examples — in the tool's documentation.

The model

Your pointDecimal degrees as entered, or the area centroid of the state you picked, taken from the published state geometry.
Each marketThe area centroid of the state that market sits in, read from src/data/us-albers.json and inverted through the projection that file was drawn with.
The distanceGreat-circle distance between the two, haversine form, on the WGS84 mean sphere.
The bandThe distance compared against three edges set by the added round-trip delay of a terrestrial hand-off at fibre propagation speed.

The spec calls this "the Albers distance". It is computed as a great-circle distance instead, because an equal-area projection preserves area and not length — a measurement taken in that plane is not a figure in kilometres anybody could defend. The two agree to better than one per cent across the four planned markets, and the measured spread is in the documentation.

The hand-off bands

Local band
Close enough that a hand-off from the gateway pad to this point would be a short terrestrial run.
Near band
A regional hand-off. What grows across this band is the terrestrial leg, not the satellite path.
Regional band
A long terrestrial leg. A site this far out is usually better answered by its own gateway pad than by a hand-off from an existing one.
Beyond the planned markets
Outside the four markets Xalant has planned. There is no gateway pad near this point and none is scheduled.

No latency class is published today. The satellite hop is a third-party operator's number; the registry key for it carries no source and no as-of date, so there is nothing to attribute a class to. The bands above describe the terrestrial hand-off, which is the part Xalant would build.

Where the gateways go

Talk to Xalant · Site hosts · carriers · community networks

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

Request capacity at a siteTalk to Xalant