AR RF/Microwave Instrumentation is the World-Class Source For: Broadband High Power, Solid State, RF Amplifiers and Microwave Amplifiers … TWT Amplifiers …Log Periodic Antennas and High-Gain Horn Antennas … EMC Test Equipment … Hybrid RF Power Amplifier Modules, Software, Field Probes and Monitors, and Electromagnetic Safety Products. AR RF/Microwave Instrumentation as part of the AR family, which also includes AR Modular RF, SunAR RF Motion, and AR Europe, is recognized around the globe for products that deliver both outstanding quality and exceptional value.