The QS2-03-463/1S from Pulsar Microwave is a 90 Degree Hybrid Coupler with Frequency 2 to 4 GHz, Insertion Loss Coupling Loss : 3.2 ± 0.3 dB, Isolation 22 dB, Coupling 3 dB, Amplitude Balance 1.2 dB. Tags: Module with Connectors. More details for QS2-03-463/1S can be seen below.