The AM1880B996 from Anatech Electronics is a Band Pass Filter with Frequency 1.85 to 1.91 GHz, Bandwidth 60 MHz, Center Frequency 1880 MHz, Insertion Loss 2.2 dB, Upper Rejection 47 dB Center +/- 400 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1880B996 can be seen below.