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L3Harris Technologies has unveiled the XL-300P, a next-generation land mobile radio (LMR) designed to integrate Project 25 (P25) radio, 5G broadband and satellite direct-to-device connectivity into a single rugged handheld device.
The XL-300P is the first P25 radio platform to incorporate a native 5G modem alongside Non-Terrestrial Network (NTN) satellite capability, providing public safety and defense agencies with three independent communications layers. The hybrid architecture ensures reliable connectivity even in remote environments, network “not-spots,” or during disasters when terrestrial infrastructure may be disrupted.
The new device supports satellite direct-to-device messaging and emergency alerting based on 3GPP Release 17 NTN standards, allowing communications to extend beyond traditional cellular coverage areas.
At launch, the XL-300P will support T‑Satellite, the satellite-to-phone service from T‑Mobile powered by the Starlink satellite constellation. The platform is also designed to support future integration with the satellite broadband network being developed by AST SpaceMobile.
By combining P25 LMR, cellular broadband and satellite communications, the device ensures that first responders can maintain voice and data connectivity even when conventional networks fail.
“The XL-300P represents the next evolution of mission-critical communications technology,” said James Potter. “With integrated 5G and satellite capabilities, the radio delivers unprecedented connectivity for users operating in the most challenging environments.”
The introduction of the XL-300P follows a recent corporate restructuring at L3Harris Technologies, which consolidated its tactical radio and electronic warfare activities into the Communications & Spectrum Dominance (CSD) division under the leadership of Jon Rambeau.
The new device builds upon the rugged design principles of the company’s XL radio series, including the XL-Extreme 400P, known for its durability in demanding operational environments.
In addition to its hardware upgrades—including a new system board and integrated 5G modem—the XL-300P represents a major step forward in satellite-enabled communications by embedding satellite connectivity directly within the handheld radio architecture.
Designed for federal, defense and public safety applications, the XL-300P incorporates advanced security and interoperability capabilities.
Key features include:
Multi-Band P25 Operation
Supports VHF, UHF, and 700/800 MHz frequency bands for interoperability across diverse LMR networks.
Broadband Convergence
Integrated LTE and 5G connectivity with priority and preemption support for users on FirstNet public safety networks.
Secure Communications
Compliance with **FIPS 140‑3 Level 3 encryption standards to ensure secure voice, data and location services.
Operational Usability
Voice-activated controls, glove-friendly keypad and high-visibility display designed for demanding field environments.
L3Harris Technologies confirmed that orders for the XL-300P are now open, with product shipments expected to begin in July 2026. The company is also planning a vehicular version of the hybrid radio platform to extend capabilities for tactical and field operations.
Looking ahead, hybrid devices that combine LMR, cellular and satellite connectivity are expected to play an important role in emerging command-and-control architectures such as Joint All‑Domain Command and Control (JADC2), enabling secure and resilient communications across public safety and defense networks.
