The RBP-440 from Mini Circuits is a Band Pass Filter with Frequency 410 to 470 MHz, Bandwidth 60 MHz, Center Frequency 440 MHz, Insertion Loss 1.67 to 1.79 dB, Rejection 20 dB @ 320 and 650 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for RBP-440 can be seen below.