The 251-015-030 from Broadwave Technologies is a Directional Coupler with Frequency 12.4 to 18 GHz, Coupling 30 dB, Coupling Variation ± 1.0 dB, Frequency Sensitivity ± 0.5 dB, Directivity 20 dB. Tags: Module with Connectors. More details for 251-015-030 can be seen below.