The C1-C98-15X from RD Microwaves is a Directional Coupler with Frequency 0.698 to 4.2 GHz, Coupling 15 dB, Directivity 16 to 20 dB, Average Power 5 to 200 W, Insertion Loss 0.43 to 0.65 dB. Tags: Module with Connectors. More details for C1-C98-15X can be seen below.