The QMC-CRYOBPF-2127 from Quantum Microwave is a Band Pass Filter with Frequency 21 to 27 GHz, Bandwidth 6000 MHz, Insertion Loss 1.75 dB, Rejection 20 dB, Lower Rejection 20 dB. Tags: Module with Connectors. More details for QMC-CRYOBPF-2127 can be seen below.