The QBF-27485-31315-50 from Qualwave is a Band Pass Filter with Frequency 27.485 to 31.315 GHz, Bandwidth 3830 MHz, Center Frequency 29400 MHz, Insertion Loss 2 dB, Upper Rejection 50 dB @32.3 GHz. Tags: Module with Connectors. More details for QBF-27485-31315-50 can be seen below.