The LG10500 from Honeywell Aerospace is a Space Qualified Circulator with Frequency 1 to 2 GHz, Insertion Loss 0.5 to 0.6 dB, Isolation 16 to 19 dB, Return Loss 16 to 19 dB, Operating Temperature -10 to 65 Degree C. Tags: Module with Connector, Coaxial Circulator. More details for LG10500 can be seen below.