The QBF-150-350-50 from Qualwave is a Band Pass Filter with Frequency 150 to 350 MHz, Bandwidth 200 MHz, Center Frequency 250 MHz, Insertion Loss 1.5 dB, Upper Rejection 50 dB@430 to 1000 MHz. Tags: Module with Connectors. More details for QBF-150-350-50 can be seen below.