The QBF-50-250-30 from Qualwave is a Band Pass Filter with Frequency 50 to 250 MHz, Bandwidth 200 MHz, Center Frequency 150 MHz, Insertion Loss 1.2 dB, Upper Rejection 30 [email protected] to 0.5 GHz. Tags: Module with Connectors. More details for QBF-50-250-30 can be seen below.