The QS4-09-464/6S from Pulsar Microwave is a 90 Degree Hybrid Coupler with Frequency 400 MHz to 2 GHz, Insertion Loss Coupling Loss : 3.5 ± 0.6 dB, Isolation 20 dB, Coupling 3 dB, Amplitude Balance 1 dB. Tags: Module with Connectors. More details for QS4-09-464/6S can be seen below.