The QS4-08-464/5S from Pulsar Microwave is a 90 Degree Hybrid Coupler with Frequency 600 MHz to 2.6 GHz, Insertion Loss Coupling Loss : 3.4 ± 0.5 dB, Isolation 20 dB, Coupling 3 dB, Amplitude Balance 1.4 dB. Tags: Module with Connectors. More details for QS4-08-464/5S can be seen below.