The DQS-20-310 from Synergy Microwave Corporation is a 90 Degree Hybrid Coupler with Frequency 20 to 310 MHz, Average Power 5 W, Insertion Loss 0.8 to 1.5 dB, Isolation 17 to 23 dB, Coupling 3 dB. Tags: Surface Mount. More details for DQS-20-310 can be seen below.