3DR Radio Telemetry 433MHz 500mW Kit for APM and Pixhawk

Long-range autonomous missions need a telemetry link that holds up well past visual range, and 3DR's 433MHz radio kit is the module that effectively defined this category for the open-source autopilot community. Frequency-hopping spread spectrum keeps the MAVLink link stable against interference, and output power is adjustable up to 500mW so range can be dialed back for short bench tests or pushed up toward its roughly 1.6 kilometre rated range for genuine field use.

The kit arrives complete rather than as a bare pair of boards: two telemetry modules, two 2.5dBi antennas, a micro USB OTG cable and the connection cables needed to wire into APM, Pixhawk or PX4 autopilots are all included. A 6-position Molex connector handles the autopilot-side wiring while the ground-station module connects over micro-USB, so there is no separate adapter or cable sourcing required before it is usable.

Common uses are long-range telemetry and mission planning on APM or Pixhawk-based fixed-wing and multirotor builds, survey and mapping flights that need live status well beyond WiFi telemetry range, and general ground-station monitoring for any open-source autopilot project operating outside visual line of sight.