The DQ-TJ-520-180 from A-Info is a 180 Degree Hybrid Coupler with Frequency 500 MHz to 2 GHz, Amplitude Balance ±0.5 dB, Phase Balance ±5.0 dB, Insertion Loss 3 dB, Isolation 17 dB. Tags: Module with Connector. More details for DQ-TJ-520-180 can be seen below.