Portable Military Helicopter ELT

Roanwell Emergency Beacon

Military heavy helicopter, army air means of transport, air force, aviation and aerospace industry, dark gray big copter with rotor
Logo-6-small (1)

406 APHM – Military Helicopter ELT

Designed for military helicopter applications, this omni-directional helicopter activation system provides reliable emergency transmission across 406.028, 121.5, and 243.0 MHz frequencies. The unit includes a transmitter, ANT-406T survival antenna, BB-12M mounting bracket, external rod antenna, cable, and battery pack. Finished in flat black for night vision compatibility, the system meets TSO-C91a and TSO-C126 certification standards.

 

Request a Quote

Why Choose EBC‑406 APHM?

Designed for operational reliability, the EBC-406 APHM supports dependable emergency signaling in demanding aviation environments. Its rugged, encapsulated construction protects internal electronics from shock, vibration, and harsh environmental exposure, while the cabin-mounted design allows for straightforward installation and accessibility during emergencies. With integrated self-test functionality and a secure mounting system, the unit provides crews with a durable and dependable emergency locator solution built for military helicopter operations

Serial number: EBC 406 APHM

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
  • True 360˚ spherical G-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.

Related Products

Portable EB

Portable Emergency Locator Transmitter

LEARN MORE
Roanwell EBS Cat

Fixed Helicopter Emergency Locator Transmitter

LEARN MORE
Closeup female hand on landline phone in office. Faceless woman in a suit works as a receptionist answering the phone to customer calls

TALK TO AN EXPERT

We invite you to connect with us regarding any inquiries you may have about our services. With over 40 years of experience connecting OEMs and customers worldwide, we are committed to providing you with expert guidance and support. Your questions are important to us. Our seasoned team is dedicated to promptly addressing your concerns and ensuring you receive comprehensive information tailored to your requirements.