The DQS-40-400 from Synergy Microwave Corporation is a 90 Degree Hybrid Coupler with Frequency 40 to 400 MHz, Average Power 1 W, Insertion Loss 1.6 to 2.2 dB, Isolation 16 to 25 dB, Coupling 3 dB. Tags: Surface Mount. More details for DQS-40-400 can be seen below.