The CBP4-T2656R25+ from Mini Circuits is a Band Pass Filter with Frequency 2631.5 to 2681 MHz, Center Frequency 2656.25 MHz, Insertion Loss 1.8 to 2.4 dB, Power 6 W, VSWR 1.42:1, 1.92:11. Tags: Surface Mount, Ceramic Filter. More details for CBP4-T2656R25+ can be seen below.