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DOT Awards Iridium CPNT Contract to Harden 5G Timing as T‑Mobile Adds PNT at 90 Sites

The selection advances a complementary timing source to reduce GPS dependence for critical infrastructure.

Overview

  • The U.S. Department of Transportation chose Iridium under its CPNT Action Plan Rapid Phase Award II to support broad deployment of complementary PNT services.
  • T‑Mobile will install Iridium PNT receivers at 90 additional live 5G network sites across geographically diverse U.S. locations.
  • T‑Mobile will conduct nominal and adverse user equipment tests at its indoor range so DOT, Iridium, and T‑Mobile can observe and record performance.
  • Iridium’s low‑Earth‑orbit L‑band service provides sub‑100‑nanosecond timing accuracy with cryptographic security and operates indoors without an outdoor antenna.
  • Benzinga reported Iridium shares rose about 4% to $19.44 on Tuesday following the announcement, though the stock remains down roughly 36% year to date.