The LF9771R from MtronPTI is a Band Pass Filter with Frequency 300 to 420 MHz, Bandwidth 120 MHz, Insertion Loss 0.9 dB, Rejection 20 to 72 dBc, Upper Rejection 25 to 72 dBc. Tags: Surface Mount, Lumped Component Filter. More details for LF9771R can be seen below.