The JSO-04-471/1S from Pulsar Microwave is a 180 Degree Hybrid Coupler with Frequency 4 to 18 GHz, Average Power 20 W, Coupling 3 dB, Amplitude Balance 0.8 dB, Phase Balance 10 Degree. Tags: Module with Connector. More details for JSO-04-471/1S can be seen below.