The CB1880/60SK-B2 from G-WAY Microwave is a Band Pass Filter with Frequency 1850 to 1910 MHz, Bandwidth 60 MHz, Center Frequency 1880 MHz, Insertion Loss 0.8 dB, Rejection 55 to 60 dB. Tags: Module with Connectors, Cavity Filter. More details for CB1880/60SK-B2 can be seen below.