The QCS-442+ from Mini Circuits is a 90 Degree Hybrid Coupler with Frequency 2800 to 4400 MHz, Average Power 15 W, Insertion Loss 0.5 to 0.9 dB, Isolation 16 to 25 dB, Amplitude Balance 0.4 to 1.1 dB. Tags: Ceramic. More details for QCS-442+ can be seen below.