The AB2490B725 from Anatech Electronics is a Band Pass Filter with Frequency 2.48 to 2.5 GHz, Bandwidth 15 MHz, Center Frequency 2490.5 MHz, Insertion Loss 3.0 dB, Upper Rejection 20 dBc @ 2505 MHz. Tags: Module with Connectors, Cavity Filter. More details for AB2490B725 can be seen below.