The AB1780B1205 from Anatech Electronics is a Band Pass Filter with Frequency 1.72 to 1.84 GHz, Bandwidth 115 MHz, Center Frequency 1780 MHz, Insertion Loss 1.0 dB, Rejection More than 43 dB. Tags: Module with Connectors, Cavity Filter. More details for AB1780B1205 can be seen below.