The QCS-981+ from Mini Circuits is a 90 Degree Hybrid Coupler with Frequency 540 to 980 MHz, Average Power 15 W, Insertion Loss 0.4 to 1.4 dB, Isolation 14 to 21 dB, Amplitude Balance 0.3 to 1.6 dB. Tags: Ceramic. More details for QCS-981+ can be seen below.