The SF3030AO-1056MHz-A from Dynamic Engineers is a Band Pass Filter with Frequency 1041 to 1071 MHz, Bandwidth 30 MHz, Center Frequency 1056 MHz, Insertion Loss 2.6 to 3.5 dB, Rejection 25 to 46 dB. Tags: Surface Mount, RF SAW Filter. More details for SF3030AO-1056MHz-A can be seen below.