The CBP-1820F+ from Mini Circuits is a Band Pass Filter with Frequency 1680 to 1960 MHz, Center Frequency 1820 MHz, Insertion Loss 1.4 to 2.5 dB, Power 1 W, VSWR 1.50:1, 2.30:1. Tags: Surface Mount, Ceramic Filter. More details for CBP-1820F+ can be seen below.