The AM1980B1343 from Anatech Electronics is a Band Pass Filter with Frequency 1.79 to 2.18 GHz, Bandwidth 390 MHz, Center Frequency 1980 MHz, Insertion Loss 3 dB, Upper Rejection 38 dB @ 2500-3500 MHz. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for AM1980B1343 can be seen below.