The QMC-BPF12-8305 from Quantum Microwave is a Waveguide Filter with Frequency 81 to 86 GHz, Insertion Loss 1.5 to 2.25 dB, Rejection 30 dB, Rejection Frequency 48 to 79 GHz / 90.5 to 95 GHz. Tags: Band Pass. More details for QMC-BPF12-8305 can be seen below.