The QH-19 from Cobham Signal & Control Solutions is a 90 Degree Hybrid Coupler with Frequency 2 to 8 GHz, Insertion Loss 0.15 dB, Isolation 22 dB, Coupling 3 dB, Coupling Variation ±.40 dB. Tags: Module with Connectors. More details for QH-19 can be seen below.