The SF2059B-1 from Murata is a Band Pass Filter with Frequency 136.7 to 138.3 MHz, Bandwidth 0.8 MHz, Center Frequency 137.5 MHz, Insertion Loss 8.3 to 9.1 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, Ceramic Filter. More details for SF2059B-1 can be seen below.