The 3A4NPF-S from Renaissance Electronics Corporation is a Space Qualified Circulator with Frequency 2.2 to 2.4 GHz, Average Power Forward 35 W, Average Power Reverse 35 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Coaxial Circulator. More details for 3A4NPF-S can be seen below.