The QS2-05-463/2S from Pulsar Microwave is a 90 Degree Hybrid Coupler with Frequency 4 to 8 GHz, Insertion Loss Coupling Loss : 3.3 ± 0.3 dB, Isolation 18 dB, Coupling 3 dB, Amplitude Balance 1.4 dB. Tags: Module with Connectors. More details for QS2-05-463/2S can be seen below.