The AB3500B510 from Anatech Electronics is a Band Pass Filter with Frequency 3.4 to 3.6 GHz, Bandwidth 200 MHz, Center Frequency 3500 MHz, Insertion Loss 2 dB, Upper Rejection 10 dBc @ 4033-4233 MHz. Tags: Module with Connectors, Cavity Filter. More details for AB3500B510 can be seen below.