The CRG-20B-1005 from Crane Aerospace & Electronics is a Bi-Directional Coupler with Frequency 100 to 1500 MHz, Frequency Sensitivity ±0.5 dB, Coupling 20 dB, Coupling Variation ±1 dB, Power 1 W. Tags: Surface Mount, Multi-Octave. More details for CRG-20B-1005 can be seen below.