The QH-50-500-S from I.F. Engineering is a 90 Degree Hybrid Coupler with Frequency 50 to 500 MHz, Average Power 3 W, Insertion Loss 1.5 dB, Isolation 20 dB, Amplitude Balance ± 0.75 dB. Tags: Module with Connectors. More details for QH-50-500-S can be seen below.