The APTQH-90-06001800-SMA from AmpliTech, Inc. is a 90 Degree Hybrid Coupler with Frequency 6 to 18 GHz, Average Power 50 W, Insertion Loss 3.8 dB, Isolation 15 to 17 dB, Coupling 3 dB. Tags: Module with Connectors. More details for APTQH-90-06001800-SMA can be seen below.