Veronte SDL radio datalink

The Veronte SDL radio datalink from Embention is a family of compact serial radio modems for line-of-sight command and telemetry links between unmanned aircraft and a ground control station. It is designed for the Veronte avionics ecosystem, where the autopilot and the ground software exchange telemetry and telecommand over a serial radio channel.

The family has three frequency-specific versions. The SDL04 covers 410 MHz to 480 MHz and 902 MHz to 928 MHz, the SDL09 covers 902 MHz to 928 MHz, and the SDL24 operates from 2400 MHz to 2483 MHz. The lower bands generally suit longer links and better tolerance of obstructions, whereas the 2.4 GHz version fits regions and payloads where that band is the licence-free option. The choice of version therefore follows the regulatory situation of the operating area and the range target of the mission.

Embention's technical documentation describes link rates of up to 345 kbps for the SDL04 and SDL24 and up to 276 kbps for the SDL09, with a configurable output power from 100 mW to 1 W and up to 2 W in the licensed 400 MHz band. These rates are suitable for telemetry, command and low-rate payload data rather than video, which is normally carried on a separate broadband link.

Network topology is flexible. The radios support point-to-point links, point-to-multipoint networks in which one ground radio serves several aircraft, and repeater arrangements that extend range or work around terrain. This matters for fleet operations, relay setups and missions that follow corridors.

Integration is kept simple. The host connects through an RS-232 serial interface, and the radio frequency connection uses an SMA connector for the antenna. The supply range is 6.5 V to 36 V, so the module can be powered from small battery packs as well as from higher-voltage platform buses. The unit measures 44 mm x 26 mm x 71 mm and weighs 68 g, and its enclosure is protected to IP67 against dust and temporary immersion.

Typical applications are fixed-wing and multirotor UAV telemetry, remote piloting beyond the range of a handheld controller within line of sight, and ground-station networks for several vehicles. As a serial modem it also suits third-party autopilots and payloads that speak RS-232.