The XMADC50-1-4-30S from XMA Corporation is a Directional Coupler with Frequency 1 to 4 GHz, Coupling 30 dB, Directivity 18 dB, Average Power 50 W, Insertion Loss 0.4 dB. Tags: Module with Connectors. More details for XMADC50-1-4-30S can be seen below.