The DIC0419L(R)1B from Partron is a RF & Microwave Isolator with Frequency 417 to 421 MHz, Average Power Forward 100 to 200 W, Insertion Loss 0.4 dB, Isolation 19 dB, Return Loss 19 dB. Tags: Drop-In, Drop-In Isolator. More details for DIC0419L(R)1B can be seen below.