The AM2300B1587 from Anatech Electronics is a Band Pass Filter with Frequency 2.27 to 2.33 GHz, Bandwidth 60 MHz, Center Frequency 2300 MHz, Insertion Loss 2 dB, Rejection 30 to 60 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM2300B1587 can be seen below.