The AB1867B597 from Anatech Electronics is a Band Pass Filter with Frequency 1.86 to 1.88 GHz, Bandwidth 25 MHz, Center Frequency 1867.5 MHz, Insertion Loss 0.75 dB, Lower Rejection 70 dB @ 1760-1880 MHz. Tags: Module with Connectors, Cavity Filter. More details for AB1867B597 can be seen below.