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Sky Drone Link 3

Sky Drone Link 3

  • $1,999.00 USD

4G/LTE Connectivity for Drones

Sky Drone Link 3 is an end-to-end encrypted low latency transmission system for drones utilizing 4G/LTE networks. It provides an unlimited-range command & control as well as UHD/4k resolution video-link via HDMI interface.

Digital Ultra High Definition Video

Sky Drone Link 3 supports HDMI camera input with  UHD 4k / 2160p.

4K Ultra HD


Gimbal Control / Flight Controller Link

Besides the video link, Sky Drone Link 3 provides a bidirectional data link between your drone and your Ground Control Station. This can be used to visualized telemetry data and/or control the drone. The MAVLink protocol according to Dronecode standard via JST-GH connector is supported out of the box. Proprietary protocols are transmitted as well. Many gimbals can be controlled using the MAVLink protocol and Sky Drone Link 3 can act as a virtual connection to the gimbal. This functionality is entirely optional.

Unlimited Range

By using existing cellular networks, the Sky Drone Link system provides you with virtually unlimited range. The only requirement is cell tower coverage. The system is
optimized for the 4G / LTE networks to provide best video quality and lowest latency but can also fall back to 3G networks. It adapts to varying signal and bandwidth conditions by automatically adjusting video parameters without interrupting the stream.


Low latency

By using our own highly optimized video processing pipeline, the system is designed for lowest latency video from scratch. The typical end-to-end latency is less than 350ms depending on the camera used.


Groundstation Software

The Groundstation to receive Video from the Sky Drone Link 3 unit runs on Windows and Linux with version for MacOS, Android and iOS in the pipeline to be released in Q2 2019.


The video stream, command&control channel and meta data are fully end-to-end encrypted making it impossible for third parties to eavesdrop the transmission or interfere with it. Rather than reinventing the wheel, we rely on open and proven standards including Datagram Transport Layer Security (DTLS) and Secure Real-Time Protocol (SRTP) using AES256.

How it works

Video only:


Video & Gimbal- or Flightcontroller Link:

Note: Gimbal Control Software not included, as it depends on the specific gimbal system.


Technical Specification


228g incl. encoder and cables

Power Input:

5V@1A + 5v@2A (encoder)

Supported HDMI Inputs Formats:

3840x2160@30p, 1920x1080@60p, 1920x1080/50p,1920x108060i, 1920x1080/50i,  1920x1080/30p, 1920x1080/30i, 1280x720@60p, 1280x720@/50p, 1280x720@/30p, 720x576i, 720x480i


dual external antenna included

Typical End-to-End Latency:


Typical Data Consumption on 4G/LTE:

10 minutes of streaming consumes:
UHD / 4K at 20mbit/s: 1500MB
Full HD at 6mbit/s: 450MB
HD at 2mbit/s: 150MB

Cellular Network Technology: LTE Advanced Pro
Supported 4G / LTE bands     B1, B2, B3, B4, B5, B7, B8, B9, B12, B13, B18, B19, B20, B26, B28, B29, B30, B32, B41, B42, B43, B46, B48, B66

3G fallback supported
Public Safety Networks      public safety LTE networks in Europe (B20, B28)
(contact us if you need FirstNet™ support)
Private LTE Networks      3.5GHz local private networks (CBRS band)
Carrier Certifications      AT&T, Verizon

Certification in progress: Bell, docomo, KDDI, Rogers, Softbank, Telstra, Telus


Compatibility and Requirements

UAV / Drone

Video transmission only:
Any UAV / drone that can carry the module weight

Gimbal Control / Flight Controller Link (optional):
A gimbal controller or flight controller that uses a serial  UART based interface.

Command & Control Autopilot:

  • MAVLink based flight stacks like PX4 and Ardupilot on any flight controller (e.g. Pixhawk 4, The Cube, Pixracer, ...)
  • Dronecode standard JST-GH connector cable provided; easily connects to Pixhawk 4, Cube, etc.
  • Any flight controller with serial/UART interface and a groundstation that can interface via TCP
Command & Control Protocols: MAVLink is supported by Sky Drone FPV 2MAVLink or any
custom protocol in raw-mode
Groundstation Software
Sky Drone FPV Client Software

Minimum: Intel i5, 8 GB RAM
Recommended: Intel i7, 8 GB RAM, dedicated graphics card.

Operating System:

  • Windows 7/8/10
  • Linux: Ubuntu 14.04 or newer
  • MacOS (soon)
  • Android (soon)
  • iOS (soon)


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