RFHIC’s RRK54596K0-780, is a 6kW, C-band, GaN solid state power transmitter designed for high power radar applications. The RRK54596K0-780 is designed with RFHIC’s state of the art gallium-nitride (GaN) on SiC HEMT, providing excellent thermal stability and high breakdown voltage. This solid-state transmitter allows upgrading the existing VED (Vacuum Electronic Device, such as Klystron, Magnetron, Travelling Wave Tube, and Cross Field Amplifier) based transmitter for radar platforms.