The AM2800B1651 from Anatech Electronics is a Band Pass Filter with Frequency 2.4 to 3.2 GHz, Bandwidth 800 MHz, Center Frequency 2800 MHz, Insertion Loss 2 dB, Rejection 30 to 50 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM2800B1651 can be seen below.