The 251-088-030 from Broadwave Technologies is a Directional Coupler with Frequency 500 MHz to 2 GHz, Coupling 30 dB, Coupling Variation ±1 dB, Frequency Sensitivity ± 0.75 dB, Directivity 20 dB. Tags: Module with Connectors. More details for 251-088-030 can be seen below.