The QMC-JFC15-6007 from Quantum Microwave is a Waveguide Circulator with Frequency 57 to 64 GHz, Bandwidth 7 GHz, Power 2 W, Isolation 14 to 18 dB, Insertion Loss 0.6 to 0.9 dB. Tags: Ferrite Circulator. More details for QMC-JFC15-6007 can be seen below.