The SF1186B-2 from Murata is a Band Pass Filter with Frequency 1.57 to 1.58 GHz, Bandwidth 2.046 MHz, Center Frequency 1575.42 MHz, Insertion Loss 2.68 to 3.5 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, Ceramic Filter. More details for SF1186B-2 can be seen below.