The PEWRD650CP02-40 from Pasternack Enterprises Inc is a Waveguide Coupler with Frequency 6.5 to 18 GHz, Coupling 40 dB, Directivity 20 dB, Insertion Loss 0.3 dB, Power 400 W. Tags: Double Ridged Coupler, Broadwall Coupler. More details for PEWRD650CP02-40 can be seen below.