The QMC-BPF12-7805 from Quantum Microwave is a Waveguide Filter with Frequency 76 to 81 GHz, Insertion Loss 1.5 to 2.25 dB, Rejection 30 dB, Rejection Frequency 48 to 74 GHz / 84.5 to 95 GHz. Tags: Band Pass. More details for QMC-BPF12-7805 can be seen below.