The SF3030AO-1216.8MHz-A from Dynamic Engineers is a Band Pass Filter with Frequency 1216 to 1217.6 MHz, Bandwidth 1.6 MHz / 18 MHz, Center Frequency 1216.8 MHz, Insertion Loss 3.5 to 4.5 dB, Rejection 25 to 50 dB. Tags: Surface Mount, RF SAW Filter. More details for SF3030AO-1216.8MHz-A can be seen below.