SiK Air Telemetry Radio V2 is the smaller, lightweight version of the standard mRo SiK Telemetry Radio V2, which is stands out as a development board, intended to be used in your vehicle or small drone and denominated by the "Air" in the title. The SiK Air version removes the USB, enclosure, and other elements to save weight and adds an external antenna for added mounting flexibility.

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

You can get the Air/Ground Bundle here.
The SiK Telemetry Radio is an open-source radio platform 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.

-1xMRC0206-150mm JST-GH to JST-GH, used in newer autopilots.
-1x MRC0213-150mm 6-Pins DF13 to JST-GH cable for PixHawk1 and older autopilots.
-1x u.FL to RP-SMA Adapter

-1x 3dBi 915Mhz or 433Mhz Antenna (depending on the version you select).

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.