EBC 406APH

 

AUTOMATIC PORTABLE HELICOPTER EMERGENCY LOCATOR TRANSMITTER

For cabin or cockpit installation in helicopters. Has 720 degree spherical automatic activation. Transmits on 406.028 & 121.5MHz. Meets TSO-C126. Approved for use without a remote control monitor.

Product Manual

The EBC 406APH is designed for installation in the cabin section of a helicopter. 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. The whip antenna can be replaced with a rod or blade antenna if desired. 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. Since it is installed near the pilot a Remote Control Monitor is not required.

The EBC 406APH 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 aircraft.

Designed with the newest technology, the EBC 406APH 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 406APH uses our proven omnidirectional activation system. This system uses 2 omnidirectional switches mounted perpendicularly to each other. Since each senses impact in 360° the total coverage is a true 360° multiaxis activation switch. The switches are connected to a timing circuit so that only a crash, not a hard landing or vibration, will activate the unit. False alarms are therefore eliminated.

A self-test feature is built into the EBC 406APH. 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 test is done directly at the ELT.

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

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)
Case Material: Aluminum
Finish: Yellow 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
Recessed 3-position toggle switch
2 year parts and labor warranty
True 360° spherical G-switch

SPECIFICATIONS

Operating Frequencies: 406.028 MHz and 121.500 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 –20ºC
Operating Temperature: -20ºC to +55ºC
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