The RBP-400 from Mini Circuits is a Band Pass Filter with Frequency 292 to 490 MHz, Bandwidth 198 MHz, Center Frequency 391 MHz, Insertion Loss 1.84 to 1.86 dB, Rejection 20 dB @ 230 and 620 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for RBP-400 can be seen below.