The QMC-BPF15-5905 from Quantum Microwave is a Waveguide Filter with Frequency 56.75 to 62 GHz, Insertion Loss 1.5 to 2.25 dB, Rejection 30 dB, Rejection Frequency 48 to 55.5 GHz / 63.0 to 77 GHz. Tags: Band Pass. More details for QMC-BPF15-5905 can be seen below.