The QBF-497.5-502.5-40 from Qualwave is a Band Pass Filter with Frequency 497.5 to 502.5 MHz, Bandwidth 5 MHz, Center Frequency 500 MHz, Insertion Loss 1.2 dB, Upper Rejection 40 [email protected] to 1 GHz. Tags: Module with Connectors. More details for QBF-497.5-502.5-40 can be seen below.