For test and measurement applications that require RF power of 20 Watts, Varian offers the 6900K Series power amplifier. For testing on antenna ranges, in EMC chambers, or on a test bench, Varian provides equipment built with quality and reliability that you can trust. The 6900K series amplifiers are constructed with proven reliable traveling wave tubes (TWTs)which are built to provide dependable service within their lifetime. These TWTs have a wide range of applications and are readily available, resulting in Varian's ability to offer additional tubes in a timely manner. The power supply for the 6900K series has a calculated MTBF of more than 41,000 hours. Combined with Varian TWTs the 6900K series amplifier provides the industry standard for dependability. The 6900K series TWT amplifier has a full line of standardized options including remote control, input and output insulators and harmonic filters. For ATE applications, IEEE 488 bus controllable amplifiers are available, with internal GPIB cards or external modules. More than a thousand Varian 6900K series amplifiers are used throughout the world, performing over a wide range of specifications, in a variety of environmental and operating conditions.