The Model DC6080A is a dual directional coupler with excellent frequency range and power handling capability. The wide range assures flexibility in coupling medium power amplifiers to oscilloscopes, voltmeters, power meters, spectrum analysers and other measuring instruments. The dual directional design allows the user to monitor both forward and reflected power, a much needed characteristic in RF suseptibility testing for amplifier overdrive protection, field control and load protection. Low insertion loss allows efficient coupling to the load while the 40 dB coupling factor is well matched to typical laboratory equipment.