In order to initiate and maintain controlled fusion reactions, the plasma must be heated to fusion temperatures. For economical, steady state tokamak reactors, efficient current drive is required. Ion Cyclotron Range of Frequencies (ICRF) have been demonstrated in reactor grade plasmas to be effective at plasma heating and central current drive. For high magnetic field fusion devices 60-240 MHz systems are envisioned, which are ideal for solid state devices.Diversified Technologies, Inc. (DTI) is building a high power (megawatt class) Direct Cavity Combiner (DCC) Transmitter in a single compact and efficient amplifier under a Department of Energy Small Business Innovative Research (DOE SBIR) grant. DTI has previously demonstrated this DCC solid state transmitter at L-band and UHF. This technology is intended to be an alternative to conventional megawatt-class Vacuum Electron Device (VED) RF sources and overcome the limited frequency range, reliability, and supply chain issues associated with tetrodes and similar VEDs. The DCC transmitter can reduce the cost of high-power RF for fusion and similar plasma heating applications. The basic transmitter technology can be readily tailored to a wide range of frequencies which makes it applicable in a wide range of applications, including high energy physics, radar, and broadcasting.The cavity and modules are undergoing testing and evaluation to compare the amplifier performance to that predicted by the simulations and calculations performed as part of the design effort. In this paper, DTI will report on the design and test results of the cavity and RF modules at 120 MHz (approximately the center of the ICRF band).