The QS4-01-464/3S from Pulsar Microwave is a 90 Degree Hybrid Coupler with Frequency 2 to 8 GHz, Insertion Loss Coupling Loss : 3.4 ± 0.5 dB, Isolation 17 dB, Coupling 3 dB, Amplitude Balance 1.6 dB. Tags: Module with Connectors. More details for QS4-01-464/3S can be seen below.