# Emergency Locator Beacon
Who / What
An **emergency locator beacon** is a portable radio-frequency transmitter designed to detect and signal distress in aviation, maritime, and terrestrial emergencies. It operates on battery power and emits a continuous signal that search-and-rescue teams use to locate aircraft crashes, shipwrecks, or individuals in peril.
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Background & History
Emergency locator beacons (ELBs) trace their origins to the mid-20th century, evolving alongside advancements in aviation and maritime safety. Early versions were developed as part of broader efforts to improve disaster response for commercial flights and naval vessels. Key milestones include:
**1960s–70s**: Standardization of ELBs under international aviation regulations (e.g., ICAO).**1985**: Introduction of the **Cospas-SARSAT** system, a global satellite-based rescue coordination network that integrates ELB signals with satellite tracking.**2004**: Mandatory adoption of **ELT (Emergency Locator Transmitter)** for all commercial aircraft under FAA/EASA regulations.---
Why Notable
The emergency locator beacon is critical to modern search-and-rescue operations, providing real-time location data that accelerates response times. Its reliability has saved countless lives by enabling precise pinpointing of emergencies—whether a plane crashes in remote areas or a vessel drifts into danger. The system’s integration with satellite networks (e.g., Cospas-SARSAT) ensures global coverage, making it indispensable for aviation, maritime, and outdoor safety.
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In the News
Recent developments highlight the ELB’s evolving role:
**2023**: Enhanced ELBs now include **Doppler-based tracking**, improving accuracy in complex environments (e.g., urban canyons or dense forests).**2024**: Increased scrutiny on battery life and signal interference, prompting upgrades to ensure longevity under extreme conditions.**Global relevance**: The system remains a cornerstone of international safety standards, with ongoing collaboration between aviation authorities (e.g., IATA) and satellite operators to refine rescue protocols.---
Key Facts
**Type**: Organization (technological system)**Also known as**:Emergency Locator Transmitter (ELT)Distress BeaconSearch-and-Rescue Beacon**Founded/Born**: No single founding date; developed incrementally since the mid-20th century.**Key dates**:**1968**: First ELB approved for commercial aircraft (U.S.).**1979**: Cospas-SARSAT launched as a global rescue coordination system.**2004**: Mandatory ELT installation for all U.S. commercial flights.**Geography**:Operates worldwide under international aviation/maritime regulations.Primarily deployed in the **U.S., Europe, Asia-Pacific, and Latin America**.**Affiliation**:Governed by **ICAO (International Civil Aviation Organization)** and **FAA/EASA** standards.Industry: Aerospace, maritime, outdoor safety.---
Links
[Wikipedia](https://en.wikipedia.org/wiki/Emergency_locator_beacon)
