The FBF-1615 from Metropole Products Inc. is a Band Pass Filter with Frequency 1.32 to 1.83 GHz, Bandwidth 20 MHz, Center Frequency 1575 MHz, Insertion Loss 2.5 dB @ 1616 MHz, Rejection 25 dB @1675MHz - 40 dB @1450 MHz. Tags: Module with Connectors. More details for FBF-1615 can be seen below.