The AM1187B1345 from Anatech Electronics is a Band Pass Filter with Frequency 999.5 MHz to 1.37 GHz, Bandwidth 375 MHz, Center Frequency 1187 MHz, Insertion Loss 3.0 dB, Upper Rejection 53 dB @ 1580-2000 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1187B1345 can be seen below.