The AM5700B1128 from Anatech Electronics is a Band Pass Filter with Frequency 5.46 to 5.94 GHz, Bandwidth 480 MHz, Center Frequency 5700 MHz, Insertion Loss 3 dB, Upper Rejection 10 dB @ 6000 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM5700B1128 can be seen below.