The IS-98/NF from MCLI is a RF & Microwave Isolator with Frequency 2.6 to 5.2 GHz, Insertion Loss 0.3 dB, Isolation 20 dB, Operating Temperature -54 to 85 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for IS-98/NF can be seen below.