The QS2-07-464/4S from Pulsar Microwave is a 90 Degree Hybrid Coupler with Frequency 4 to 18 GHz, Insertion Loss Coupling Loss : 3.5 ± 0.8 dB, Isolation 15 dB, Coupling 3 dB, Amplitude Balance 1.6 dB. Tags: Module with Connectors. More details for QS2-07-464/4S can be seen below.