The RMIS20.3600-4200Nf from Response Microwave Inc is a RF & Microwave Isolator with Frequency 3.6 to 4.2 GHz, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for RMIS20.3600-4200Nf can be seen below.