The AM2583B1507 from Anatech Electronics is a Band Pass Filter with Frequency 2.5455 to 2.6205 GHz, Bandwidth 75 MHz, Center Frequency 2583 MHz, Insertion Loss 2.2 dB, Rejection 45 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM2583B1507 can be seen below.