The CBP4-1650Q+ from Mini Circuits is a Band Pass Filter with Frequency 1600 to 1700 MHz, Center Frequency 1650 MHz, Insertion Loss 2.5 to 3 dB, Power 5 W, VSWR 1.35:1, 1.92:1. Tags: Surface Mount, Ceramic Filter. More details for CBP4-1650Q+ can be seen below.