Military Portable ELT

Roanwell Emergency Beacon

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406 APM – Portable Military ELT

Military version of the EBC 406AP. For cabin mounting. Painted black for night vision goggle compatibility. Does not need a remote control monitor. Transmits on 406.028, 121.5, & 243.0MHz.

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Why Choose EBC‑406 APM?

The EBC‑406 APM is a military‑grade, cabin‑mounted emergency locator transmitter engineered for aircraft using night‑vision systems. Finished in non‑reflective flat black and transmitting on 406.028, 121.5, and 243.0 MHz, it features rugged encapsulated electronics, a built‑in monitor with LED and audible alerts, and reliable automatic activation. With its included rod and survival antennas, waterproof and shock‑resistant construction, and no need for a remote-control monitor, it delivers dependable emergency signaling in demanding operational environments.

Serial number: EBC 406 APM

Physical features:

  • Size (ELT): 2.9" W x 2.5" D x 6.7" H

  • Total Weight: 2.5 lbs. (including battery, but not antennas or cable)

  • Case Material: Aluminum

  • Finish: Black Baked Enamel

Special features:

  • Encapsulated for waterproofness and shock resistance

  • Handhold lanyard

  • Mounting bracket with latch to hold the ELT securely in place

  • Self-test feature with audible and visual indication of pass or fail

  • Fire resistant

  • Easy installation in cabin

  • Recessed 3-position toggle switch

  • 2-year parts and labor warranty

Specifications:

  • Operating Frequencies: 406.028 MHz, 243.0 MHz, and 121.5 MHz

  • Modulation 406.028 MHz: Biphase L (16KOG1D)

  • Modulation 121.500 MHz: Swept tone 1600 Hz to 300 Hz, 2-4 times/second

  • Output Power on 406.028 MHz: 5W for 24 hours at -20˚C

  • Output Power on 121.500 MHz: 50 mW min for 50 hours at -20˚C

  • Operating Temperature: -20˚C to +55˚C

  • Battery Type: Lithium Manganese Dioxide (GS-46 Battery Pack)

  • Useful Battery Life: 5 years or 1 hour of cumulative use

  • Automatic Activation: Velocity change of 3.5 ft/sec activates ELT

  • Altitude: 50,000 ft

  • Decompression: 8000 ft to 50,000 ft

  • Over Pressure: -15,000 ft

  • Humidity: 95% for 144 hours

  • Shock Performance: 500 Gs on 6 Axis for 4ms, 100 Gs on 6 Axis for 100ms

  • Vibration: Withstands 10 Gs

  • Immersion: Withstands 24 hours in salt water

  • Message Protocols: Aviation User Protocol, Serialized Aviation User Protocol

  • Activation Alerts: LED and buzzer

  • Input Power: No Aircraft Power Required


    Note: Distress signals on 121.5 or 243.0 MHz are legal but processing of the signals by Search and Rescue personnel was discontinued in 2009.

© Emergency Beacon

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