The ZDC9-33M500-2500-1379 from COM-MW is a Bi-Directional Coupler with Frequency 500 to 2500 MHz, Coupling 31.5 to 34.5 dB, Power 150 W, Insertion Loss 0.25 dB, Directivity 20 dB. Tags: Surface Mount. More details for ZDC9-33M500-2500-1379 can be seen below.