AR RF/Microwave Instrumentations Model DC2035A is a high power ultra-broadband coupler with excellent performance characteristics over a range of more than 14 octaves. This dual directional coupler is a convenient means of simultaneously monitoring forward and reverse power in high power systems using normal laboratory oscilloscopes, voltmeters, power meters, and spectrum analyzers. The Model DC2035A is uniquely suited for use with our A series high power amplifiers, other amplifiers operating within this frequency and power range, and our PM2003 power meter.