The QS2-04-463/2S from Pulsar Microwave is a 90 Degree Hybrid Coupler with Frequency 2.6 to 5.2 GHz, Insertion Loss Coupling Loss : 3.2 ± 0.3 dB, Isolation 20 dB, Coupling 3 dB, Amplitude Balance 1.2 dB. Tags: Module with Connectors. More details for QS2-04-463/2S can be seen below.