The Wide Band Data Link Line-of-Sight (WBDL LOS) is an avionics wireless communication system for downlink streaming of broadband ISR data (Intelligence, Surveillance, Reconnaissance e.g. Synthetic Aperture Radar, high resolution digital video, analog video) and two-way transmission of Ethernet TCP/IP data, sensor control, mission control, and ATC voice.

Operational applications of the WBDL LOS span through a wide range of manned and unmanned platforms, including tactical UAVs, High and Medium Altitude - Long Endurance UAVs (HALE / MALE), Helicopters, and other ISR platforms.

The WBDL LOS product operates in the Ku radio band (15GHz). However, its modular design supports customizations to other radio bands, e.g. the C band (5GHz).

The WBDL System is composed of an Airborne Data Terminal (ADT) and one or more Ground Data Terminals (GDT), and operates in line-of-sight conditions at very long ranges by means of two-axis directional antennas automatically tracking the aircraft motion.

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  • Key Features
  • Technical Specifications
  • The WDL-45/S version complies with NATO STANAG 7085 Edition 3
  • The non-NATO version (WDL/45E)
    operates a proprietary radio protocol for non-NATO customers
  • Robust and secure digital waveforms,
    with data rates up to 45 Mb/s in downlink and 2 Mb/s in uplink
  • Strong FEC techniques, configurable data rates, and Spread Spectrum waveforms improve the operational ranges and robustness of communication services
  • Automatically controlled high-gain directional antennas on board and on ground
  • ADT processes in real time the aircraft Navigation data
  • GDT implements monopulse tracking technique, ensuring fast link setup and dynamic antenna control
  • Ground Data Terminal includes a remote Interface Unit, which may be installed up to 1.5 km away from the tracking antenna
  • Point-to-Point
  • Broadcast (with omnidirectional antenna at the aircraft)
  • Multi-user: advanced Uplink waveform with multiple GDTs
  • Relay mode: provision, implemented on request.


Range (Including Fade Margin)

  • Standard configuration
  • 200 km in point-to-point mode @ 44.73 Mb/s
  • 50 km in broadcast mode @ 10.71 Mb/s
  • Optional High-end configuration (with additional airborne RF amplifier and larger ground antenna):
  • 300 km in point-to-point mode @ 44.73 Mb/s
  • 200 km in broadcast mode @ 44.73 Mb/s


Operation at Frequency Bands

  • Downlink 14.40 - 14.83 GHz
  • Uplink 15.15 - 15.35 GHz



  • Downlink from 10.71 Mb/s to 44.73 Mb/s
  • Uplink from 200 kb/s to 2 Mb/s
  • Uplink 100 kb/s in multi user mode



  • WDL-45/S: STANAG 7085 Ed. 3
  • WDL-45/E: proprietary non-NATO waveform


Transec and Comsec

  • DSSS Direct Sequence Spread-spectrum (uplink)
  • Directional antenna beams
  • AES-256 embedded encryption


Antenna Tracking

  • Automatic, based on aircraft navigation data and monopulse techniques


  • 3 Gbit Ethernet
  • 2 Serial I/O interfaces for low latency C2 reserved data.
  • 1 Air Traffic Control analog audio and PTT relay, two way
  • 1 Analog video input PAL/NTSC with H.264 compression
  • 3 Serial Aircraft Navigation data inputs at the ADT
  • MIL-STD-1553B
  • ARINC 429 option
  • RS-422 (Navigation or GPS)


ADT Dimensions

  • ADT Transceiver: 3/8 ATR Short i.a.w. ARINC 404 A
  • Omni antenna: 55 mm x 135 mm x 80 mm (WxDxH)
  • Directional Antenna: 210 mm x 210 mm (Ø x Height)
  • Other antenna options are available.


GDT Dimensions

  • Remote Interface Unit: 300 mm x 460 mm x 120 mm (WxDxH)
  • Antenna with Tripod: 2.30 m x 2.35 m (Ø x Height)
  • Antenna dish Standard Ø 1.2 m, High End Ø 2.0 m


ADT Weight

  • ADT Transceiver: 6 kg
  • High Gain steerable Antenna Unit: 6 kg


GDT Weight

  • Remote Interface Unit: 10 kg
  • Antenna: 130 kg



  • ADT: 200 W, 28 VDC
  • GDT: 1 kW peak, 100 W at remote Interface Unit. 220 VAC



  • ADT i.a.w. RTCA DO-160 F, MIL-STD-461 F
  • GDT i.a.w. MIL-STD 810 F, MIL-STD-461 F
  • Wind: max 80 km/h speed at GDT



  • RTCA DO-178C, level “D”

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