The SF1189B from Murata is a Band Pass Filter with Frequency 261.5 to 298.5 MHz, Bandwidth 18.5 MHz, Center Frequency 280 MHz, Insertion Loss 8.2 to 8.5 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, Ceramic Filter. More details for SF1189B can be seen below.