The CA-26 from Marki Microwave is a Directional Coupler with Frequency DC to 26.5 GHz, Coupling 27 to 53 dB, Directivity 13 to 24 dB, Average Power 50 W, Insertion Loss 0.25 to 0.7 dB. Tags: Module with Connectors. More details for CA-26 can be seen below.