A 16 channel FrSky radio frequency (RF) board in the Taranis that converts input electrical information into a radio signal applied to an antenna. The Taranis has an internal XJT module. An external 16 channel XJT module is available from FrSky. This module can increase the maximum number of Taranis channels from 16 to 32. This module fits any transmitter that has a standard JR module bay.