The TBG-395M500M-3S-90 from Talent Microwave Inc is a 90 Degree Hybrid Coupler with Frequency 0.395 to 0.5 GHz, Average Power 30 W, Insertion Loss 0.5 dB, Isolation 20 dB, Coupling 3 dB. Tags: Module with Connectors. More details for TBG-395M500M-3S-90 can be seen below.