The BFE-2586-172 from ESJ Technology is a Band Pass Filter with Frequency 2500 to 2672 MHz, Center Frequency 2586 MHz, Insertion Loss 1.5 dB, Rejection 35 dB, Upper Rejection 40 dB@2715 MHz. Tags: Module with Connectors. More details for BFE-2586-172 can be seen below.