The SF3030AO-1212MHz-A from Dynamic Engineers is a Band Pass Filter with Frequency 1189 to 1235 MHz, Bandwidth 46 MHz, Center Frequency 1212 MHz, Insertion Loss 1.9 to 3 dB, Rejection 30 to 54 dB. Tags: Surface Mount, RF SAW Filter. More details for SF3030AO-1212MHz-A can be seen below.