The 991-103109-601 from M2 Global Technology is a RF & Microwave Isolator with Frequency 1.03 to 1.09 GHz, Average Power Forward 200 W, Average Power Reverse 100 W, Insertion Loss 0.3 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for 991-103109-601 can be seen below.