The AE12B9783 from Anatech Electronics is a Band Pass Filter with Frequency 1.16 to 1.43 GHz, Bandwidth 275 MHz, Center Frequency 12.975 GHz, Insertion Loss 2 dB, Upper Rejection 50 dB @ 13.46 -20 GHz. Tags: Module with Connectors, Cavity Filter. More details for AE12B9783 can be seen below.