The QBF-36800-40200-58 from Qualwave is a Band Pass Filter with Frequency 36.8 to 40.2 GHz, Bandwidth 4400 MHz, Center Frequency 38000 MHz, Insertion Loss 2 dB, Upper Rejection 58 dB@42 to 67 GHz. Tags: Module with Connectors. More details for QBF-36800-40200-58 can be seen below.