The University of Massachusetts Microwave Remote Sensing Laboratory (UMass-MIRSL) has demonstrated the first highly sensitive solid-state 95 GHz airborne cloud radar. This compact Millimeter-wave Radar (CMR) flew on the NASA Proteus during a series of engineering and science flights in a field campaign organized by the U.S. Department of Energy Atmospheric Radiation Measurement Unmanned Aerospace Vehicle (ARM-UAV) program. CMR has a number of innovative RF and digital technologies that are detailed in this paper. In addition we present a critical performance evaluation comparing CMR measurements with those taken with a well-known pulse radar