The AB2450B1056 from Anatech Electronics is a Band Pass Filter with Frequency 2.44 to 2.46 GHz, Bandwidth 11 MHz, Center Frequency 2450 MHz, Insertion Loss 3 dB, Upper Rejection 90dBc@2400&2500MHz. Tags: Module with Connectors, Cavity Filter. More details for AB2450B1056 can be seen below.