Iridium Satellite Time and Location (STL)
Strong satellite timing signal that backs up GPS, even indoors
Satelles
Company that created Satellite Time and Location, a GPS backup that broadcasts strong timing and position signals from Iridium's low-orbit satellites. Iridium bought it in 2024 and now sells the service as Iridium STL. (1 product in the atlas)
Website points to Iridium's PNT page, where the service now lives. The redirect from satelles.com was observed on 2026-10-22.
Products, by altitude
Low Earth orbit · 160–2,000 km
In service
Milestones
- Apr 2024 Iridium Communications completed its acquisition of Satelles and renamed the service Iridium Satellite Time and Location (STL). It was Iridium's first acquisition of another company.1
Sources
Updated Oct 22, 2026 · How we source facts · Suggest a correction