The KBK-708S from Synergy Microwave Corporation is a Directional Coupler with Frequency 10 to 2000 MHz, Coupling 9.8 dB, Coupling Variation ±1 dB (Flatness), Directivity 13 to 22 dB, Insertion Loss 1.6 to 3 dB. Tags: Module with Connectors. More details for KBK-708S can be seen below.