The 8C9-1880-X60N11 from Reactel is a Band Pass Filter with Frequency 1.85 to 1.91 GHz, Bandwidth 60 MHz, Center Frequency 1880 MHz, Insertion Loss 0.8 dB @ Passband, Rejection 60 dB @ 1930 - 1990 MHz. Tags: Module with Connectors, Cavity Filter. More details for 8C9-1880-X60N11 can be seen below.