ebc 406ap

Quality compatibility are guaranteed with EBC’s accessories and replacement components.

For fixed wing aircraft. Cabin mounted, complete system with external whip antenna, transmits on 406.028 & 121.5MHz. Meets TSO-C91a and TSO-C126. Approved for use without a Remote Control Monitor.


Product Manual

The EBC 406AP is designed for installation in the cabin or cockpit of a fixed
wing aircraft. It transmits on the frequencies of 406.028 and 121.5 MHz.
The system comes with a transmitter, portable/survival antenna, mounting
bracket, external whip antenna with a 6 foot coax cable and a battery pack.
Since it is installed near the pilot a remote control monitor is not required.
If the ELT is activated a built-in monitor emits a loud beeping tone and the
LED flashes. The portable/survival antenna allows the ELT to transmit a
good signal when used outside the aircraft.

Designed with the newest technology, the EBC 406AP also incorporates the
best and proven features that characterize all of EBC’s emergency locator
transmitters. These transmitters have encapsulated electronics and battery
packs to provide added protection against shock, moisture and other
environmental hazards.

The EBC 406AP is meant to be installed near the pilot. This eliminates the
need for a remote control monitor and thus reduces the cost of installation
and the need to use panel space. This type of installation also allows for
easy removal of the ELT in case of an emergency – just disconnect the
antenna cable and attach the portable/survival antenna after leaving the

A self-test feature is built into the EBC 406AP. This feature allows the pilot
to test for output power on both 406.028 and 121.5 MHz, the connection
with the antenna, and the condition of the digital signal.

The EBC 406AP is approved by the FAA under TSO-91a and TSO-126,
approved by COSPAS/SARSAT and meets FCC requirements under Part 87.


  • Size (ELT): 2.9″ W x 2.5″ D x 6.7″ H
  • Size (with mounting bracket(: 7.8″ H x 3.7″ D x 3.7″ W
  • Total Weight: 2.5 lbs. (including battery, but not antennas and cable)
  • Case Material: Aluminum
  • Finish: Yellow Baked Enamel


  • Encapsulated for complete waterproofing and shock resistance
  • Handhold lanyard
  • Mounting bracket with latch to securely hold ELT in place
  • Self-test feature with audible and visual indication of pass or fail
  • Fire resistant
  • Installation easy
  • Recessed 3-position toggle switch
  • 2 year parts and labor warranty


Operating Frequencies: 406.028 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


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