The RFLC101M38M50 from RF-Lambda is a RF & Microwave Circulator with Frequency 380 to 500 MHz, Average Power Forward 100 W, Insertion Loss 0.3 to 0.4 dB, Isolation 20 to 21 dB, Operating Temperature -20 to 70 Degree C. Tags: Coaxial Circulator. More details for RFLC101M38M50 can be seen below.