The DBTC-9-4-75L+ from Mini Circuits is a Directional Coupler with Frequency 5 MHz to 1.2 GHz, Coupling 8.94 to 9.55 dB, Directivity 17.66 to 20.52 dB, Power 0.5 W, Average Power 0.5 W. Tags: Surface Mount. More details for DBTC-9-4-75L+ can be seen below.