The QCS-592+ from Mini Circuits is a 90 Degree Hybrid Coupler with Frequency 3100 to 5900 MHz, Average Power 15 W, Insertion Loss 0.5 to 1 dB, Isolation 16 to 28 dB, Amplitude Balance 0.5 to 1.4 dB. Tags: Ceramic. More details for QCS-592+ can be seen below.