The AB2440B520 from Anatech Electronics is a Band Pass Filter with Frequency 2.4 to 2.48 GHz, Bandwidth 80 MHz, Center Frequency 2440 MHz, Insertion Loss 2 dB, Upper Rejection 60 dB at 2520.7 MHz. Tags: Module with Connectors, Cavity Filter. More details for AB2440B520 can be seen below.