Reactel part number 7C9-2656.39-5.11S11 is a narrow band, highly selective cavity filter. This unit is centered at 2656.39 MHz and has a 3 dB bandwidth of 5.11 MHz. This filter has a rejection of greater than 45 dB at CF +/- 6 MHz Insertion loss measures less than 4 dB, and VSWR is less than 1.25:1.