3DR SiK Telemetry Radio Air/Ground Bundle includes two radios. The small version goes in your air vehicle and the "big" one plugs into ground station via the USB connector.

3DR SiK Telemetry Radio is a small, light and inexpensive open-source radio platform, stands out as a development board, that typically allows ranges of better than 300m “out of the box” (the range can be extended to several kilometers with the use of a patch antenna on the ground). The radio uses open-source firmware which has been specially designed to work well with MAVLink packets and to be integrated with Mission Planner, Copter, Rover, and Plane.


The SiK Air comes in two frequencies; 915Mhz [US] and 433Mhz [Europe].

-1x MRC0206 JST-GH to JST-GH, used in newer autopilots.
-1x u.FL to RP-SMA Adapter.

-1x Micro USB cable.

For evaluation only; not FCC approved for resale.
FCC NOTICE: This kit is designed to allow:

(1) Product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and

(2) Software developers to write software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained.

The measurements below are shipping related: