The unmanned systems are highly reliant on connectivity solutions, which shall withstand hostile environment.

Patria’s airborne CANDL datalink is designed for this, based on long experience of national datalink evolution. The connectivity solution is based not only by datalink but supporting mission planning, which optimizes datalink usage according to threat environment.

Patria CANDL - Compact Airborne Networking Data Link

Patria CANDL provides a single data link solution for communications requiring high reliability, such as UAS payload data and C2. It enables air-to-air and air-to-ground Ad Hoc Networking as well as relaying for BLOS capability, thus enabling capabilities such as MUMT - Manned UnManned Teaming and LVC – Live Virtual Constructive training.

8 Mbps data rate with additional safety features for C2, dynamic Ad Hoc Networking communication, motion video and digital voice capability are all integrated in one Software Defined Radio based compact airworthy terminal.

Our CANDL covers NATO IV C-band as well as WRC 2012 defined civil UAS C2 frequency band in single housing enabling both military and civil UAS applications. Networking and range performance can be further extended with optional external HPA (High Power Amplifier) module.

C2 & Payload Data

  • Secure Command & Control for UAV platforms, payload and missiles
  • Payload data (HD video, IR, SAR) for manned/unmanned platforms
  • Distribution of situational awareness through networked data transfer for fighters
  • Operation in GPS-denied environment
  • Platform independent system (air, naval, ground)
  • Legacy systems upgrade for enhanced performance

Manned-Unmanned Teaming (MUMT)

  • Force multiplier in hostile environment
  • Multi-platfrom and swarming capability
  • Mission distributed decision-making and co-ordination
  • Optimisation of the role and performance of the platform on-the-fly
  • Real-time communication through ad-hoc IP-network

Live Virtual Constructive (LVC) Training

  • Cost effectiveness utilising simulators and synthetic forces
  • More demanding and easily scalable training scenarios
  • Hiding warfighting tactics into secure digital environment
  • Enabling complex training scenarios for manned and unmanned platforms
  • Joint-networked, real-time communication between all Live, Virtual and Simulated assets

Patria CANDL Key Characteristics


  • TDMA with dynamic reconfiguration
  • Full IP compatibility
  • Up to 24 network members
  • Robust and flexible network management
  • Internal or GPS based synchronisation

Low probability of Intercept / Detection

  • Frequency Hopping (FH)
  • Direct Sequence Spread Spectrum (DSSS)
  • Automatic diversity selection for two antennas

Adaptive Throughput

  • Up to 8 Mbit/s (user configurable)
  • Different Class of Service (CoS) levels


  • AES-256 based encryption
  • User authentication and user-specific encryption keys


  • > 150 km / 80 NM LOS
  • > 250 km / NM LOS (external HPA)
  • Relaying for BLOS and range extension
  • Range measurement

Software Defined Radio Architecture

  • Software configurable waveform
  • Flexible user specific tailoring 
  • Easy capability upgrades

Qualified solution for UAS Applications

  • STANAG 4586 compatible
  • DO-160 and MIL-STD-810 environmental qualification

Frequency Band

  • NATO IV C-band
  • WRC-2012 civil UAS C2
  • SW configurable frequency/channel allocation and hopping pattern

Patria CANDL Terminal

  • Designed for the most demanding environmental conditions including high speed aircraft
  • Optional internal COMSEC/encryption module
  • Size: 110 x 175 x 100 mm (4.4 x 6.9 x 4.0 in)
  • Weight: 2.5 kg (5.5 lbs)
  • Power: typical 55W
  • Conduction cooled

Optional external HPA (High Power Amplifier)

  • Extended range capability
  • Size: 100 x 162 x 43 mm (4.0 x 6.4 x 1.7 in)
  • Weight: 1.0 kg (2.2 lbs)
  • Power: typical 150W