Reactel part number 8C9-1880-X60N11 is a PCS Receive band filter. This unit is centered at 1880 MHz with a flat passband of 60 MHz. Passband Insertion Loss comes in at less than 0.8 dB, with a passband Return Loss of greater than 16 dB and has 60 dB of attenuation at 1930 to 1990 MHz.