The JSO-10-471/3S from Pulsar Microwave is a 180 Degree Hybrid Coupler with Frequency 1 to 4 GHz, Average Power 20 W, Coupling 3 dB, Amplitude Balance 0.5 dB, Phase Balance 6 Degree. Tags: Module with Connector. More details for JSO-10-471/3S can be seen below.