Evenlode III

Upgradable Lightweight Air Platform System

  • Custom configured for specific end-user requirements.
  • Lightweight envelope.
  • Designed for OEM’s, 3rd party integrators and end-users.

Product Description

Evenlode III Data Terminal. Evenlode III has the data exchange capability of Evenlode II. In addition, air and ground equipment may be deployed to extend the full range of Internet Protocol (IP) services to the air platform; these include internet in the air, remote sensor control from the ground, remote access to databases, augmented reality and shared white-boarding applications. The link between a pair of Evenlode III terminals behaves, in networking terms, as an Ethernet cable with a maximum data rate defined by the radio link parameters.

Evenlode III System adds the following:

  • The Evenlode Transceiver module.
  • 2 x Aircraft uplink antennas.
  • 1 x Transmit Antenna
  • 2 x Low Noise Block downconverters (LNB) for diversity reception and RF output Receive Filter.
  • Suitable ground transceiver with an antenna system specific to operational requirements.
  • Upgrade to convert ground receiver rack to transceiver rack including mast mounted transmit amplifier and antenna.
  • IP transmission license

Technical Specifications

139 mm x 145 mm x 218 mm, 3.6 kg approx.

Power Requirements
135 W typ (L Band) 11-15, 22-30 VDC.

1.2 – 6.4 GHz; uplink and downlink channel set each within a 10% proportional bandwidth. Isolation between channel sets.

Link Mode Selection
FEC – 1/2, 2/3, 3/4, 5/6.

Guard Interval
1/4, 1/8, 1/16.


Channel Bandwidth
1.7,2,3,4,5,6,7,8 MHz.

Link Data Rate
930 kbps – 20.1 Mbps.

Data Interfaces
100/10BASE-T Ethernet and, ASI.

Network Description
Bidirectional OSI-Layer 1 network repeater/2-port hub. Terminals on either side of the Evenlode link on the same collision domain. Integral 2-port switch or routing technology to customer requirements.

GPS Input
Line-powered GPS active antenna, ARINC429 Interface or direct NMEA0183 feed also available. GPS input may also be via Ethernet port.

AES 256 (subject to export license approval) or Substitution Cipher Encryption.

Control Data
Dedicated serial control (System Control Unit optional) or via Ethernet port. The Evenlode air transceiver may also be controlled via the uplink. Control of modulation, guard interval, forward error correction, channel bandwidth, encryption, frequency.

-20° C to +55 ° C temp, 0 – 90% rel humidity non-condensing, 25,000 ft altitude operating conditions.

Tested to RTCA DO160G.

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