The ADCB-20-82+ from Mini Circuits is a Bi-Directional Coupler with Frequency 1 to 800 MHz, Coupling 18.5 to 21.8 dB, Average Power 0.5 to 1 W, Power 0.5 to 1 W, Insertion Loss 0.2 to 0.9 dB. Tags: Surface Mount. More details for ADCB-20-82+ can be seen below.